We previously resolved part of appellant Colie L. Long’s consolidated appeal following his conviction on charges of conspiracy to commit murder, first-degree premeditated murder while armed, assault with a dangerous weapon, and possession of a firearm during a crime of violence. See Long v. United States, 910 A.2d 298 (D.C.2006) (Long I). Mr. Long was convicted of the shooting death of a fourteen-year-old boy, Ronald Williamson, two weeks after Mr. Williamson threatened Mr. Long at gunpoint. Id. at 301. The government’s evidence established that William Tilghman and Mr. Long were together at the time of the murder, that Mr. Long instructed Mr. Tilghman to kill Mr. Williamson, but that when Mr. Tilghman hesitated, Mr. Long grabbed the gun and shot Mr. Williamson multiple times.1 Id. at 301-02. As we stated in Long I, “the theory of [Mr. Long’s] defense was that [Mr.] Tilghman killed Mr. Williamson by himself, and that he was lying about [Mr.] Long’s participation in the murder in order to receive a lighter sentence.” Id. at 302.
Although we rejected two of Mr. Long’s direct appeal claims, we vacated the trial court’s order denying his D.C.Code § 28-*366110 (2001) motion for a new trial based on ineffective assistance of counsel, because the trial court denied that motion without a hearing. Id. at 301. We said that a hearing was necessary to assess the credibility of witnesses, because “credibility determinations cannot be based on affidavits or countered by conclusory statements but may be resolved only by recourse to a full evidentiary hearing.” Id. at 310 (quoting Newman v. United States, 705 A.2d 246, 261, 262 (D.C.1997) (internal quotation marks omitted)). Consequently, we remanded the case “for further proceedings on the [D.C.Code § 23-110] motion in accordance with our opinion.” Id. at 310-11. On remand, the trial court held an eviden-tiary hearing on the ineffective assistance of counsel motion and subsequently denied the motion. Mr. Long challenges the denial of his motion. We affirm the trial court’s judgment of conviction, and its judgment denying Mr. Long’s D.C.Code § 23-110 motion.
In addition to the ineffective assistance of counsel issue, before us is the trial court’s denial of Mr. Long’s renewed motion for correction of sentence pursuant to Super. Ct. Civ. R. 35. He asserts that his sentence is illegal because the trial court made findings on matters that should have been decided by the jury. We disagree and affirm the trial court’s denial of Mr. Long’s Rule 35 renewed motion for correction of sentence.
SUMMARY OF THE EVIDENTIARY HEARING ON REMAND
On remand, the trial judge conducted an evidentiary hearing on Mr. Long’s D.C.Code § 23-110 motion. The hearing took place on, April 23 and 24, 2008, and August 5, 2008.
Mr. Long’s Witnesses
Mr. Long presented seven witnesses.2 Their testimony variously focused on (1) an alleged statement by Mr. Tilghman showing that he and not Mr. Long killed Mr. Williamson; (2) the injury to Mr. Long’s hand which allegedly made it impossible for him to shoot Mr. Williamson; (3) Mr. Long’s dissatisfaction with his attorney, Mitchell Baer; and (4) an alleged conspiracy to harm Mr. Tilghman. Following is a summary of the testimony of Mr. Long’s witnesses.
Halim Flowers, who grew up with Mr. Long, stated that he had been in prison for eleven years, and that he had met Mr. Tilghman3 in 1997, when they were incarcerated in the juvenile block at the D.C. Jail. Mr. Tilghman told him (Mr. Flowers) “that he had committed a murder, or that he was going to beat the murder ... by blaming it on another individual by the name of Meatball [Mr. Long].” Others who heard Mr. Tilghman’s confession were Michael Plummer, Momolu Stewart, Dominique Littlejohn, and Michael White. Sometime between February 1998 and May 1998, Mr. Flowers and Mr. Stewart met with a defense lawyer or investigator *367and recounted what Mr. Tilghman had said. Mr. Flowers was impeached with his felony convictions (including first-degree murder and first-degree burglary while armed).
Momolu Stewart also was incarcerated with Mr. Tilghman in the juvenile block of the D.C. Jail, in 1998. He was a co-defendant in a case with Mr. Flowers before the charges against him (Mr. Stewart) were dismissed. He acknowledged that Mr. Flowers, Mr. Plummer, Mr. Long, Mr. Hunter, and Mr. Bellinger also were at the D.C. Jail in 1998. He became “real close” with Mr. Tilghman and talked with him “[p]retty much like every other day” about how Mr. Tilghman “said he was going to put the case on Colie Long because somebody ... said they was going to do something to his mother.” Mr. Tilghman “[b]a-sically said he committed the murder on [Mr. Williamson].” Mr. Stewart admitted that he had been convicted of first-degree murder in 1998, and he also acknowledged convictions on weapons offenses on more than one occasion. He stated that Mr. Tilghman had spoken to him “[a]bout ten times” concerning Mr. Long’s case, but that he could not remember the details.
Patrick Andrews described himself as “an old friend” of Mr. Long. Their families lived in the same neighborhood. In early 1996, Mr. Andrews saw Mr. Long with a “hard cast” on his right hand.4 He spoke with Mr. Long again sometime in 1998; Mr. Long said “he needed [Mr. Andrews] to be a witness for him.” Mr. Andrews later talked with Mr. Long’s counsel about Mr. Long’s hand. Mr. Andrews did not testify on behalf of Mr. Long. He acknowledged that he was incarcerated in March 1998. Mr. Andrews admitted that he had been convicted in two separate cases for first-degree murder while armed and related weapons charges.
Kevin Bellinger and Mr. Long are cousins. He was with Mr. Long at a club when a fight broke out and Mr. Long injured his hand. Later, Mr. Bellinger saw Mr. Long with a hard cast on his hand on more than one occasion within about a two-week period. Mr. Bellinger admitted that he was found guilty, in 1999 and 2002, of weapons offenses, attempted possession with intent to distribute cocaine, and assault with intent to kill while armed, with accompanying weapons violations.
Lawrence Hunter was incarcerated with Mr. Long and Mr. Tilghman at the D.C. Jail, in 1996. While he was on the juvenile block, he heard Mr. Tilghman brag about killing [Mr. Williamson]. Mr. Hunter was not called as a witness at Mr. Long’s trial, and he did not recall being in court on March 16, 1998, and invoking the Fifth Amendment, or being told that “the government believed they had evidence that he [Mr. Hunter] [was] part of a conspiracy to harm [Mr.] Tilghman.” Nor did he remember refusing to speak with Mr. Long’s counsel on February 27, 1998, because Mr. Long “advised [him] not to speak to his [Mr. Long’s] attorney.” Nor did he remember having written letters containing threats against Mr. Tilghman. Mr. Hunter admitted that he was convicted of first-degree murder in a 1996 case. On redirect examination, Mr. Hunter recalled being angry with Mr. Tilghman about his attempt to put Mr. Williamson’s murder on Mr. Long, because it was wrong. However, he never told anyone about Mr. Tilghman’s plan. He stated that he was never charged with threats against Mr. Tilghman or with obstructing justice in Mr. Long’s case.
*368Michael Plummer was incarcerated with Mr. Tilghman in the juvenile block of the D.C. Jail in 1997. He heard Mr. Tilghman say that he committed a murder but that he would “put it on Meatball” (Mr. Long). When Mr. Plummer turned 18, he was moved to the adult block where he met Mr. Long. Mr. Long had heard that Mr. Plummer had been on the juvenile block with Mr. Tilghman. Mr. Plummer gave testimony at Mr. Long’s first trial.5 Government counsel impeached Mr. Plummer with his convictions on charges of first-degree murder while armed and related weapons offenses. Mr. Plummer acknowledged that his own counsel advised him not to testify at Mr. Long’s second trial; Mr. Plummer’s own retrial occurred at the same time as Mr. Long’s retrial.6 On redirect examination at the § 23-110 hearing, Mr. Long’s counsel tried to pose questions to determine whether Mr. Plummer did not testify at Mr. Long’s second trial because of fear of an obstruction of justice charge, but the trial court sustained objections to the questions. However, the court allowed Mr. Plummer to respond to the question: “Did you not testify at the second trial because you would get into trouble?” Mr. Plummer responded, “Yes.”
Government counsel inquired about the prosecutor’s cross-examination of Mr. Plummer during his testimony at Mr. Long’s first trial. The cross-examination included questions concerning whether (1) Mr. Plummer “had authored a report in jail that people were pressing on [him],” that is, “people were violating [his] body”; (2) “he would do anything to keep them off of [him]”; (3) a man “named Gangster came up to [him and another man named Littlejohn], told [him] to go after [Mr.] Tilghman, [and] that’s exactly what [Mr. Plummer] started to do”; (4) he had stolen the shoes he was wearing in court from Mr. Tilghman, and (5) when Mr. Tilghman “asked for his shoes back, ... [he] t[o]l[d] [Mr.] Tilghman, ‘you better be glad that I just took your shoes, because we were supposed to kill you.’ ” Government counsel used the March 13, 1998, transcript from Mr. Long’s first trial to establish that the questions had been asked and that Mr. Plummer had denied the accusations. Government counsel then asked Mr. Plum-mer at the § 23-110 hearing, whether at Mr. Long’s first trial, “the prosecutor was accusing [him] of being involved in the conspiracy to kill Mr. Tilghman.” The trial court sustained the defense objection to that question. After several more questions, government counsel inquired whether “the substance of the [prosecutor’s] question ... [was] that [Mr. Plummer was] supposed to kill [Mr.] Tilghman?” Mr. Plummer answered, “Yes.” Mr. Plum-mer acknowledged that in a 1997 case, he was convicted of first-degree murder while armed and weapons offenses.
Mr. Long began his testimony at the § 23-110 hearing by explaining the reasons for his dissatisfaction with his trial counsel, Mr. Baer; Mr. Baer represented him at his first and second trial. Mr. Long’s dissatisfaction included Mr. Baer’s failure to personally investigate Mr. Long’s case, his advice that Mr. Long not testify at the suppression hearing or at trial, Mr. Baer’s lack of experience in trying murder cases, and Mr. Baer’s alleged failure to call witnesses, including Tiffany Rauch.7 With respect to the injury to his *369right hand, Mr. Long indicated that about three weeks before the shooting of Mr. Williamson, he broke the knuckle of his hand during a night club fight and it was still swollen at the time of the shooting.
Mr. Heslep asked Mr. Long about Mr. Plummer’s failure to testify at Mr. Long’s second trial. He responded:
He [Mr. Baer] said he did not put Mr. Plummer on the stand because of allegations that Mr. Plummer had stole [Mr.] Til[gh]man’s tennis shoes and certain things and he said my association with [Mr.] Plummer makes me look bad because they’re trying to say that I was sending guys to threaten [Mr.] Til[gh]man and trying to say obstruction of justice. So he said me being associated with the guys, he wouldn’t call them for a witness.
Mr. Long denied directing anyone to intimidate Mr. Plummer. When Mr. Heslep inquired whether Mr. Long had talked with Mr. Baer about the fact that he was not convicted at his first trial even though Mr. Plummer answered questions about the sneakers and intimidation, Mr. Long said he had and that Mr. Baer “was adamant ... that my being associated with this guy with allegations of me trying to witness tampering and threatening him, that he didn’t want to put him on the stand.” Furthermore, Mr. Long expressed dissatisfaction with Mr. Baer because he did not follow-up on information Mr. Long gave him about (1) government witness Angela Wheeler’s visits to him at the jail and her assertion that she had lied during her testimony, and (2) the clothes found in his apartment belonging to Mr. Tilghman and not to Mr. Long, as well as the failure to examine the shell casings found at the scene to prove that Mr. Long’s fingerprints were not present.
During cross-examination by government counsel, Mr. Long confirmed that Ms. Rauch was related to him and that he “hung out with her or she was in [his] circle of friends.” In addition, counsel established that Mr. Long’s family had hired a private investigator during representation by his first counsel, not Mr. Baer. Government counsel turned to the firing of Leroy Nesbitt, another attorney who had represented Mr. Long, and inquired why Mr. Nesbitt was fired. Mr. Long replied that Mr. Nesbitt wanted him to testify that Mr. Tilghman had killed Mr. Williamson. When asked how he knew that Mr. Tilgh-man had killed Mr. Williamson, Mr. Long maintained that he (Long) was in the apartment building when he heard shots and that Mr. Tilghman had run to the apartment and said he had killed Mr. Williamson. On the subject of Mr. Long testifying at his own trial, government counsel said: “And the reason you didn’t is because of the advice of your counsel that you would be impeached with the alleged confession you gave to the police when you were arrested; is that correct?” Mr. Long answered: “His exact words was they were going to find me guilty because the detectives will come in and say you confessed to it ... and it will be your word against their word and the jury is going to go with the police.”8
The Government’s Witness
The government called one witness during the § 28-110 hearing, Mr. Baer. In response to government counsel’s question as to whether he attempted to present Mr. Plummer as a witness in Mr. Long’s retrial *370proceeding, Mr. Baer declared, “I believe that because of the nature of his testimony in the first trial and because of the Fifth Amendment issue, I don’t believe I presented Mr. Plummer in the second trial.” By, “nature of his testimony” Mr. Baer explained that he was referring to the cross-examination questions the prosecutor had asked Mr. Plummer, at Mr. Long’s first trial, relating to Mr. Plummer’s alleged theft of Mr. Tilghman’s basketball shoes and his alleged threats against Mr. Tilghman — “something to the effect that Mr. Til[gh]man was lucky that all they did was take his shoes because they were threatening to stab him.”
In February 1998, Mr. Baer spoke with men who were incarcerated with Mr. Long about Mr. Tilghman; three men refused to speak with him. Of those to whom he spoke, Mr. Baer “was skeptical of what they were telling [him] for a number of reasons,” including their serious criminal charges and “inconsistencies in what they told [Mr. Baer].” He became concerned “about whether they were telling the truth.” He moved to withdraw from the case because of “ethical concerns about presenting testimony that he knew to be false.” The motions judge advised him to consult with Bar Counsel. Bar Counsel advised him to try to persuade Mr. Long not to present false testimony, but if he was not successful, he should present the testimony. Mr. Baer withdrew his motion to withdraw.
Mr. Baer informed Mr. Long that he did not believe Mr. Stewart was credible and Mr. Long agreed not to present him as a witness. However, Mr. Long disagreed with Mr. Baer’s decision not to call Ms. Wheeler, so Mr. Baer called her as a witness. Mr. Baer spoke with the doctor at the D.C. Jail about Mr. Long’s right hand injury and that doctor said that the hand injury would not have prevented Mr. Long from firing the gun, and therefore, Mr. Baer did not call the doctor as a witness. Mr. Baer was able to make contact with Ms. Rauch. He determined that “she would not be helpful at all to Mr. Long” because she claimed that at the time of the Williamson shooting, Mr. Long was asleep in her apartment, but Mr. Long had informed Mr. Baer that he was asleep in Florence Green’s apartment when the shooting occurred. In addition, Mr. Baer’s July 18,1997, notes show that according to Mr. Nesbitt, Mr. Tilghman “told [Ms. Rauch] ... to hide the guns” and that “both ... Mr. Long, and Mr. Til[gh]man had guns.”
On cross-examination, Mr. Heslep wanted to know why Mr. Baer called Mr. Plum-mer during the first trial, but not Mr. Flowers, Mr. Stewart and Mr. Hunter. Mr. Baer replied that he “had no reason not to put on Mr. Plummer” and that he “became skeptical of the others because ... they refused to speak with [him] at first” and because “they all had very serious charges” which “was going to detract from their credibility.” He also thought their location on the same block with Mr. Long at the D.C. Jail, “would have been a pretty big coincidence.” However, he did not recall examining the records at the D.C. Jail to determine whether Mr. Long and the others were in the same block at the jail. Although he had some of the men to whom he had spoken brought to the courthouse for the second trial “because Mr. Long wanted [him] to call them,” he did not put them on the stand because “it was a combination of them asserting the Fifth Amendment, ... [and] there were disadvantages to calling them that [he] had discussed with Mr. Long and [Mr. Long] agreed that it would be better not to call at least some of them.”
As an example of a disadvantage, Mr. Baer pointed to the government’s cross-*371examination questions, posed during Mr. Long’s first trial, about “some kind of a conspiracy to get Mr. Til[gh]man” and the government’s revelation “that for the second trial ... they were going to pursue that line of cross-examination with the other witnesses, other than Mr. Plummer.” Mr. Baer agreed that the conspiracy line of Mr. Plummer’s cross-examination at the first trial “hadn’t been a complete disaster.” When asked why, then, he had not read Mr. Plummer’s testimony at the first trial into the record of the second trial after Mr. Plummer asserted the Fifth Amendment, Mr. Baer said: “I can’t recall if I considered it, but all of his testimony would have come in.... I can’t recall if it occurred to me or not. It may not have occurred to me.” Mr. Baer “probably did not” discuss the introduction of the transcript of Mr. Plummer’s testimony with Mr. Long.
On redirect examination, Mr. Baer was again asked about Mr. Plummer’s cross-examination during the first trial. He declared that “it was quite a surprise to [him] that [Mr.] Plummer was alleged to have been wearing [Mr.] Til[gh]man’s shoes and it was also a surprise to [him] that he was alleged to have been biased against [Mr.] Til[gh]man in this plot to potentially stab him, so that made his testimony — that hurt his credibility.” As to the reading of Mr. Plummer’s cross-examination into the record of the second trial, Mr. Baer asserted: “I would probably be pretty reluctant — thinking back on it now, I would probably be pretty reluctant to do that, based on the cross-examination.”
THE TRIAL COURT’S DECISION ON THE SECTION 23-110 MOTION
The trial court rendered its decision on the D.C.Code § 23-110 motion on December 10, 2008, in a twenty-five page order. Judge Christian discredited the testimony of Mr. Long and the other defense witnesses, but credited the testimony of Mr. Baer. Based upon the testimony given during the hearing, and consistent with her credibility determinations, Judge Christian made findings of fact relating, in part, to the incarceration of potential defense witnesses with Mr. Tilghman in the juvenile block of the D.C. Jail, the transfer of some of those witnesses to the adult eellblock at the jail where they met Mr. Long, Mr. Baer’s surprise at the cross-examination responses of Mr. Plummer during Mr. Long’s first trial, Mr. Baer’s concern about the veracity, credibility and criminal records of those whom Mr. Long wanted as his witnesses, Mr. Long’s “active role in directing his defense,” Mr. Baer’s serious concerns about Mr. Plummer’s truthfulness and his willingness to change his testimony, Mr. Baer’s investigation of Mr. Long’s claim that he could not have shot Williamson because of his broken right hand, Mr. Long’s ability to “ball[ ] his fingers together to legibly sign his name on the PD-47 card only hours after Mr. Williamson was shot and killed,” Mr. Baer’s conclusions about Ms. Rauch’s proposed testimony, Mr. Baer’s investigation of the lighting at the scene at the time of the shooting, and Mr. Baer’s cross-examination of Ms. Wheeler which resulted in her statement that “she was not certain who actually shot Mr. Williamson.”
Judge Christian made conclusions of law rejecting Mr. Long’s claims that Mr. Baer was ineffective because he did not present (1) testimony regarding Mr. Long’s inability to shoot a gun at the time Mr. Williamson was shot; (2) the testimony of Mr. Flowers, Mr. Stewart, Mr. Hunter, and Mr. Plummer at the second trial; (3) Ms. Rauch’s testimony; and (4) nighttime photographs of the crime scene. Judge Christian summarized her conclusions as follows:
*372Based on the evidence presented during the evidentiary hearing in this matter, the [c]ourt finds that Mr. Baer was not ineffective in representing [Mr. Long] in his first and second jury trials. In foregoing the presentation of evidence related to [Mr. Long’s] hand injury, Mr. Baer made a strategic decision premised on a sound investigation of facts available at the time. In addition, the lack of testimonial evidence from [Mr.] Flowers, [Mr.] Stewart and [Mr.] .Hunter was based on a combination of said individuals invoking their Fifth Amendment privilege against self-incrimination and a lack of general credibility. Likewise, although [Mr.] Plum-mer testified in the Defendant’s first trial, Mr. Baer’s decision to avoid using his testimony in [Mr. Long’s] second trial was a tactical decision designed to avoid introducing potentially incriminating evidence from a less than credible witness. Moreover, Mr. Baer’s decision not to present [Ms.] Rauch as a potential alibi witness represented another strategic decision to avoid the introduction of potentially incriminating evidence and complications from a less than willing witness. Finally, although Mr. Baer could have introduced nighttime photographs of the crime scene during [Mr. Long’s] trials, his failure to do so did not prejudice [Mr. Long] in any way. Thus, [Mr. Long] has presented no viable argument for why this [c]ourt should find Mr. Baer ineffective during his representation of [Mr. Long].
ANALYSIS
Ineffective Assistance of Counsel
Mr. Long contends, in part, that his trial counsel’s performance was constitutionally deficient and, “as a direct result of these deficiencies, [he] suffered prejudice.” Specifically, he argues that his counsel:
(1) failed to litigate or challenge [Mr.] Plummer’s purported assertion of privilege at the second trial or, in the alternative, to introduce [Mr.] Plummer’s pri- or sworn testimony into evidence at the second trial; (2) neglected to fully investigate [Mr.] Long’s serious hand injury that would have impacted [Mr.] Long’s ability to load, shoot, and otherwise handle the weapon purportedly used to murder [Mr.] Williamson; and (3) failed to obtain nighttime photographs of the crime, scene that would have corroborated a key witness’s testimony that the area was too dark to discern who the shooter was.
The government responds that: “The record amply supports the trial court’s finding that, even if [Mr.] Plummer had been available to testify in person or via transcript in [Mr. Long’s] second trial, defense counsel made a reasonable tactical decision not to present that testimony.” Moreover, the government emphasizes the “evident impact of the conspiracy charge,” filed against Mr. Long prior to his second trial, and in light of that impact, the government contends that Mr. Long “cannot demonstrate a reasonable probability that there might have been a different outcome if [Mr.] Plummer’s testimony had been part of the second trial.” Under the conspiracy charge, Mr. Long could be convicted without having fired the gun. With respect to the injury to Mr. Long’s hand and the absence of nighttime photographs of the crime scene, the government asserts, in part, that even assuming Mr. Long’s counsel had introduced evidence showing whether Mr. Long could have fired a gun with his injured hand and revealing what the crime scene looked like at night, there is no reasonable probability that the outcome of his trial would have been different.
In addressing Mr. Long’s ineffective assistance of counsel claim, we ap*373ply familiar legal standards. “ ‘The benchmark for judging any claim of ineffectiveness must be whether counsel’s conduct so undermined the proper functioning of the adversarial process that the trial cannot be relied on as having produced a just result.’ ” Cosio v. United States, 927 A.2d 1106, 1122 (D.C.2007) (quoting Strickland v. Washington, 466 U.S. 668, 686, 104 S.Ct. 2052, 80 L.Ed.2d 674 (1984)). Appellant must show both deficient performance and prejudice. With respect to deficient performance, he must demonstrate that “his trial counsel committed errors so serious that counsel was not functioning as the counsel guaranteed the defendant by the Sixth Amendment.” Brown v. United States, 934 A.2d 930, 943 (D.C.2007) (citing Strickland, supra, 466 U.S. at 687, 104 S.Ct. 2052) (internal quotation marks omitted). We “‘must indulge a strong presumption that counsel’s conduct fell within the wide range of reasonable professional assistance.’ ” Brown, supra, 934 A.2d at 943 (quoting Strickland, supra, 466 U.S. at 689, 104 S.Ct. 2052). “ ‘Trial tactical decisions generally do not result in a finding of ineffective assistance of counsel.’ ” Brown, supra, 934 A.2d at 943 (quoting Zanders v. United States, 678 A.2d 556, 569 (D.C.1996)). We “will not second-guess trial counsel’s strategic choices because ‘[m]any alternative tactics are available to defense attorneys and their actions are often the products of strategic choices made on the basis of their subjective assessment of the circumstances existing at trial.’” Brown, supra, 934 A.2d at 943 (alteration in original) (quoting Zanders, supra, 678 A.2d at 569) (other citation omitted).
As for prejudice, appellant must show “that counsel’s errors were so serious as to deprive the defendant of a fair trial, a trial whose result is reliable,” Strickland, supra, 466 U.S. at 687, 104 S.Ct. 2052, and that “but for counsel’s unprofessional errors, [there is a reasonable probability] that the result of the proceedings would have been different.” Id. at 694, 104 S.Ct. 2052. Moreover, Strickland cautions that “^Judicial scrutiny of counsel’s performance must be highly deferential.” Id. at 689, 104 S.Ct. 2052. This is so because “[i]t is all too tempting for a defendant to second-guess counsel’s assistance after conviction or adverse sentence, and it is all too easy for a court, examining counsel’s defense after it has proved unsuccessful, to conclude that a particular act or omission of counsel was unreasonable.” Id. (citation omitted).
We focus first on Mr. Long’s contention regarding the trial court’s alleged error:
The court erred when it determined that trial counsel was not ineffective but, rather, made a “strategic decision” or “tactical decision,: when he failed to call [Mr.] Plummer to testify and failed to introduce [Mr.] Plummer’s prior sworn testimony at [Mr. Long’s] second trial. [Mr.] Plummer’s testimony was essential to counter the testimony of the critical prosecution witness, [Mr. Tilghman], who testified he was with [Mr. Long] when [Mr.] Long shot and killed [Mr.] Williamson.
Initially, based on our reading of the trial transcripts, we disagree with Mr. Long’s characterization of Mr. Tilghman as “the critical prosecution witness.” Obviously, he paints Mr. Tilghman as “the critical prosecution witness” in order to magnify the importance of Mr. Plummer’s testimony as a rebuttal to Mr. Tilghman’s identification of Mr. Long as the shooter.
In closing arguments at both Mr. Long’s first and second trials, the government emphasized the eyewitness testimony of Linn Thomas (Mr. Williamson’s mother), Angela Wheeler, and Florence Green. De*374fense counsel sought to impeach these witnesses,9 and to stress Mr. Tilghman’s importance to the case. According to the government’s proof, Ms. Thomas saw Mr. Long standing over her son with a gun in his right hand (Mr. Tilghman is left-handed) and he pointed the gun directly at her. Angela Wheeler told the grand jury that she saw both Mr. Long and Mr. Tilghman and Mr. Williamson at the time of the shooting, and that Mr. Long was the shooter. When Ms. Green heard gunshots, she looked into the alley and saw Mr. Long running from the alley toward her apartment. During the first trial, the prosecutor stated in rebuttal that Mr. Tilghman “is not our key witness.” In her rebuttal in the second trial, the prosecutor stated that Mr. Tilghman had lied in the case and admitted his responsibility. She also re-emphasized the separate and independent identifications of the shooter by Ms. Thomas, Ms. Wheeler, and Ms. Green. Thus, as a threshold matter, we cannot agree with Mr. Long (in his effort to stress the importance of Mr. Plummer’s testimony) that Mr. Tilghman was “the critical prosecution witness.”
Furthermore, we are not convinced by Mr. Long’s effort to undermine the trial court’s determination that Mr. Baer made a strategic decision not to call Mr. Plum-mer at Mr. Long’s second trial, or to introduce the transcript of his testimony at the first trial. Mr. Long’s second trial was quite different from the first trial due to the added conspiracy charge after the first trial. At the outset of the second trial, the trial judge informed the jury of the charges in the indictment, the first of which was the conspiracy charge — that “[Mr.] Long and another person ... did knowingly and willfully combine, conspire, confederate and agree together to murder [Mr.] Williamson....” In delivering her closing argument, the prosecutor identified two possible theories of Mr. Long’s guilt. The main government theory was the conspiracy — Mr. Long decided to kill Mr. Williamson and to accomplish the killing, he asked Mr. Tilghman to help him and entered into an agreement with Mr. Tilgh-man. According to the government’s proof, overt acts committed to accomplish the conspiracy included the fact that Mr. Tilghman and Mr. Long armed themselves with a loaded firearm on March 18, 1996, the day before Mr. Williamson’s murder; Mr. Long instructed Mr. Tilghman to retrieve the loaded firearm on March 19, which he did; and both men went to the alley on the night of the murder where Mr. Tilghman gave Mr. Long the loaded firearm; Mr. Long shot Mr. Williamson, and he pointed the firearm at Ms. Thomas with his right hand. The prosecutor identified the government’s alternative theory as: Mr. Long “is the shooter, the principal. He is the person that shot and killed Ronald Williamson.”
We are satisfied that Mr. Baer made a strategic decision not to call Mr. Flowers, Mr. Hunter, Mr. Plummer, and others as witnesses at the second trial. At the § 23-110 hearing, he identified three reasons for his decision: (1) their assertion of the Fifth Amendment, and (2) his skepticism “about whether they were telling the *375truth,” and (3) their serious criminal charges and convictions which would cast doubt on their credibility. Indeed, the trial court discredited the testimony of all of the defense witnesses at the D.C.Code § 23-110 hearing. Moreover, at the time of Mr. Long’s second trial, Mr. Flowers, Mr. Stewart, Mr. Andrews, Mr. Hunter, and Mr. Plummer all either had been convicted of first-degree murder, or were awaiting trial on first-degree murder charges, and all had been incarcerated at the D.C. Jail.
Not only was Mr. Baer skeptical about the veracity of the potential witnesses that Mr. Long wanted to call, but he also was troubled by the prosecutor’s cross-examination of Mr. Plummer at Mr. Long’s first trial. In that cross-examination, the government began by posing questions which placed Mr. Plummer in the D.C. Jail, juvenile block, with Mr. Tilghman, Mr. Hunter, and Mr. Littlejohn, and with speaking access to the adult block where Mr. Long was housed. The government then turned to an alleged grievance complaint that Mr. Plummer had filed in 1997, indicating that other inmates were feeling his body; and posed further questions suggesting that because of his harassment and intimidation at the Jail, two men told him “to go after [Mr.] Tilghman,” and he did. The prosecutor next focused on the shoes Mr. Plum-mer had worn to court, accused Mr. Plum-mer of stealing the shoes, and asked whether he told Mr. Tilghman, “I just took your shoes because we were suppose[d] to kill you.” At the D.C.Code § 23-110 hearing, Mr. Baer said that the content of the cross-examination “was quite a surprise to [him]” and that Mr. Plummer’s alleged involvement in the “plot to potentially stab” Mr. Tilghman “hurt [Mr. Plummer’s] credibility.”
Mr. Long claims prejudice because Mr. Baer did not challenge “Mr. Plummer’s assertion of privilege at the second trial or, in the alternative, ... introduce [Mr.] Plummer’s prior sworn testimony into evidence at the second trial.”10 Our dissenting colleague disagrees with the trial court’s stated belief that “[Mr.] Plummer could assert a valid claim of privilege.” However, Mr. Plummer testified at the § 23-110 hearing that his own attorney advised him not to testify. Moreover, as we previously pointed out, in response to his own attorney’s question, during the D.C.Code § 23-110 hearing, Mr. Long recounted the reasons Mr. Baer had given him for not calling Mr. Plummer to testify at Mr. Long’s second trial:
He [Mr. Baer] said he did not put Mr. Plummer on the stand because of allegations that Mr. Plummer had stole [Mr.] Til[gh]man’s tennis shoes and certain things and he said my association with [Mr.] Plummer makes me look bad because they’re trying to say that I was sending guys to threaten [Mr.] Tilghman and trying to say obstruction of justice. So he said me being associated with the guys, he wouldn’t call them for a witness.
In addition, Mr. Long stated that Mr. Baer “was adamant ... that my being associat*376ed with this guy with allegations of me trying to witness tampering and threatening him, that he didn’t want to put him on the stand.” As we also established earlier in this opinion, the record reflects at least three reasons why Mr. Baer did not call Mr. Plummer, Mr. Hunter, and Mr. Flowers as witnesses at Mr. Long’s second trial; the Fifth Amendment privilege was only one of those reasons. Indeed, the testimony of both Mr. Long and Mr. Baer at the § 23-110 hearing reveals that Mr. Baer was deeply concerned about the veracity of Messieurs Plummer, Flowers, and Hunter, and the impact on their credibility of their felony convictions, which included first-degree murder.
As the trial court recognized, Mr. Baer made a strategic choice, or a tactical decision, not to present Mr. Plummer as a witness at the second trial. The cross-examination of Mr. Plummer (and any of the other men who were housed at the D.C. Jail at the same time as Mr. Long) undoubtedly would have been vigorous and would have focused on the alleged harassment of Mr. Plummer and the alleged plot against Mr. Tilghman. Moreover, the government indubitably would have insisted that the full transcript of Mr. Plummer’s testimony be introduced, rather than just the direct examination testimony. With Mr. Baer’s focus, at the time of the second trial, on the harmful nature of the government’s cross-examination of Mr. Plummer at the first trial and his credibility, it is understandable that he could not recall whether he considered reading Mr. Plum-mer’s testimony into the record at the second trial. Nevertheless, Mr. Baer remarked at the § 23-110 hearing, that “all of [Mr. Plummer’s] testimony would have come in.” Therefore, it is unlikely that he would have considered introducing the transcript of Mr. Plummer’s trial testimony.
Our case law is clear that “ ‘[t]rial tactical decisions generally do not result in a finding of ineffective assistance of counsel.’ ” Brown, supra, 934 A.2d at 943 (quoting Zanders, supra, 678 A.2d at 569); see also Strozier v. United States, 991 A.2d 778, 787 (D.C.2010) (“[Strategic choices ... will seldom if ever be wanting.”) (first alteration in original) (quoting Strickland, supra, 466 U.S. at 681, 104 S.Ct. 2052 (internal quotation marks omitted)). As we reiterated in Strozier, “[b]ecause advocacy is an art and not a science, and because the adversary system requires deference to counsel’s informed decisions, strategic choices must be respected in these circumstances if they are based on professional judgment.” 991 A.2d at 787 (citing Strickland, supra, 466 U.S. at 681, 104 S.Ct. 2052) (internal quotation marks omitted). Here, Mr. Baer made a clear strategic choice and on this record, we cannot say that Mr. Baer’s strategic choice not to present Mr. Plummer as a witness constituted ineffective assistance of counsel. See Brown, supra, 934 A.2d at 943 (“This court will not second-guess trial counsel’s strategic choices because [m]any alternative tactics are available to defense attorneys and their actions are often the products of strategic choices made on the basis of their subjective assessment of the circumstances existing at trial.” (internal quotation marks and citation omitted)). In sum, we affirm the trial court’s judgment denying Mr. Long’s D.C.Code § 23-110 motion.
Mr. Long’s Sentence
Mr. Long argues that the trial court’s sentence is unconstitutional in light of Apprendi v. New Jersey, 530, U.S. 466, 120 S.Ct. 2348, 147 L.Ed.2d 435 (2000), because the trial court found three aggravating factors that were not determined by the jury: (1) the murder was “especially heinous,” (2) the crime involved substantial planning, and (3) the victim was “vulnera*377ble” because of his age (14). We conclude that Mr. Long is procedurally barred from raising this argument, and even if he were not, his argument is still unpersuasive because Apprendi does not apply retroactively-
We first examine the relevant procedural history of the sentencing issue. The trial court sentenced Mr. Long on September 4, 1998, to concurrent terms; it imposed a prison term of life without parole for the first degree murder while armed conviction, and lesser terms for the other charges. Mr. Long first raised his Ap-prendi arguments via a pro se motion to correct his sentence pursuant to Super. Ct.Crim. R. 35(a),11 on July 27, 2004, after his counsel had filed his first § 23-110 motion in 2003, and during the pendency of his direct appeal. He argued that his sentence was illegal because “[t]he jury which deliberated [his] case held no knowledge of these aggravating factors.” The trial court issued an order denying his pro se motion on August 9, 2004, and Mr. Long did not appeal that order. The trial court later denied his § 23-110 motion without a hearing on November 15, 2004. Mr. Long filed a notice of appeal for that denial on November 29, 2004. The collateral case was ultimately consolidated with his direct appeal, which resulted in our decision in Long I, supra.
When we decided Mr. Long’s consolidated appeal in 2006, Long I, “we d[id] not reverse Mr. Long’s convictions outright, but we vacate[d] the order denying his § 23-110 motion and remand[ed] the case to the Superior Court for further proceedings on the motion in accordance with our opinion.” Long I, supra, 910 A.2d at 310-11. Later, on April 15, 2008, Mr. Long’s new counsel (Mr. Heslep) filed a renewed motion for correction of sentence, repeating his argument that the trial judge, “not the jury, made the factual findings to support the enhanced sentence of life without parole.” On June 24, 2008, the government filed an opposition to the renewed motion.
On December 11, 2008, after holding an evidentiary hearing, the court issued an order on Mr. Long’s § 23-110 motion pursuant to our instructions on remand. However, the trial court took no action on Mr. Long’s renewed motion to correct his sentence, and he filed a notice of appeal on December 15, 2008. We subsequently remanded the record to the trial court “with directions to rule, on an expedited basis, on the defendant’s renewed motion to correct his sentence or, in the event that the trial court has previously ruled on this motion, to memorialize the previous ruling in writing.” Judge Christian entered an order dated January 7, 2011, which denied Mr. Long’s renewed motion. The judge attached her 2004 order, indicated that Mr. Long did not appeal that order, stated that the 2004 order addressed all of Mr. Long’s contentions, and that he had raised no “additional evidence” in his renewed order.
As a threshold matter, we do not believe that Mr. Long’s sentence is illegal within the meaning of Rule 35, as he claims. Rule 35(a) specifies that: “The Court may correct an illegal sentence at any time and may correct a sentence imposed in an illegal manner within the time provided herein for the reduction of sentence.” In Ruffin v. United States, 25 A.3d 1 (D.C.2011), we reiterated the distinction between an illegal sentence and a sentence imposed in an illegal manner.
An illegal sentence within the meaning of Rule 35(a) is a sentence that is inconsistent with the defendant’s conviction, *378and that exceeds the limits authorized by the relevant statute, even if there was no irregularity in the sentencing proceeding. By contrast, a sentence imposed in an illegal manner is one that reflects defects in the process or proceedings prior to the imposition of the sentence.
25 A.3d at 4-5 (citations and internal quotation marks omitted). A sentence imposed in an illegal manner generally is subject to the 120-day time limitation reflected in Rule 35(b); the motion must be made “not later than 120 days after the sentence is imposed ..., or not later than 120 days after receipt by the Court of a mandate issued upon affirmance of the judgment ...., or not later than 120 days after entry of any order or judgment of the Supreme Court denying review of, or having the effect of upholding, a judgment of conviction....” Rule 35(b). Mr. Long’s motion to correct sentence was based on his assertion that the judge rather than the jury made the Apprendi findings. Thus, his actual claim is that his sentence was imposed in an illegal manner, and it is subject to the 120-day time limitation of Rule 35(b).
Whether Mr. Long’s renewed motion runs afoul of the 120-day time limitation in Rule 35(b) depends on whether it is characterized as a new motion or merely as a memorialization of his 2004 motion. When we remanded Mr. Long’s case to the trial court in 2006, after deciding Long I, we “return[ed it] ... to the trial court for all purposes.” Bell v. United States, 676 A.2d 37, 41 (D.C.1996). Mr. Long filed his renewed motion for correction of sentence on April 15, 2008, prior to the commencement of his remand evidentiary hearing on his D.C.Code § 23-110 motion. Thus, at the time that Mr. Long filed his renewed motion, we “retain[ed] no jurisdiction over the case”; jurisdiction remained with the trial court. See id. On December 15, 2008, Mr. Long appealed the trial court’s denial of his D.C.Code § 23-110, motion, and his case returned to this court. However, because the trial court had not addressed the renewed sentencing motion, we remanded the record, at which point we retained “jurisdiction over the case....” Id.
Arguably, under these circumstances, the trial court’s 2011 order denying Mr. Long’s renewed motion technically was a new order. But, it could be characterized as nothing more than a memoriali-zation of the 2004, order since “[t]he point of such a remand is to give the trial judge the opportunity to complete or clarify the record so that this court will have an adequate basis for review of the trial court’s rulings.” Id. Characterizing the trial court’s 2011 order as a mere memorialization of the court’s 2004 order gives us some pause, however, because Mr. Long failed to appeal the 2004 order and did not lodge his renewed motion until four years later. Nevertheless, we are satisfied that Mr. Long’s 2004 motion and his 2008 renewed motion were procedurally barred for the reasons set forth below.
We have stated that “[w]here a defendant has failed to raise an available challenge to his conviction on direct appeal, he may not raise that issue on collateral attack unless he shows both cause for his failure to do so and prejudice as a result of his failure.” Head v. United States, 489 A.2d 450, 451 (D.C.1985). Mr. Long did not raise the Apprendi issue in his direct appeal, or his first § 23-110 motion, nor did he appeal the denial of his first Rule 35 challenge in 2004. He acknowledges that the sole purpose of our remand of the case in 2006 was “for a hearing on [his] § 23-110 motion.” He complains that his “appellate counsel did not raise this issue [pertaining to Appren-di ] above,” yet, he fails to articulate the *379cause of, and any prejudice resulting from, his counsel’s failure to do so. Moreover, his arguments in his renewed motion encompassed the same arguments contained in his original motion, the denial of which he failed to appeal four years earlier. As “[sjection 28-110 is not designed to be a substitute for direct review,” id., we cannot agree that Mr. Long’s “motion remains ripe for resolution” on collateral attack.12
Despite the procedural bar, Mr. Long urges us to reach the merits of his claim. Even if we were not foreclosed from reviewing Mr. Long’s sentencing challenge, the government argues that his claim is barred because Apprendi does not apply retroactively. In Schriro v. Summerlin, 542 U.S. 348, 124 S.Ct. 2519, 159 L.Ed.2d 442 (2004), the Court declared that while “[n]ew substantive rules generally apply retroactively” (emphasis in original), “[n]ew rules of procedure ... generally do not apply retroactively.” Id. at 351-52, 124 S.Ct. 2519. The Court clearly stated that “rules that regulate only the manner of determining the defendant’s culpability are procedural.” Id. at 353, 124 S.Ct. 2519 (citing Bousley v. United States, 523 U.S. 614, 620, 118 S.Ct. 1604, 140 L.Ed.2d 828 (1998)).
Apprendi addressed “the adequacy of [sentencing] procedure,” not “the substantive basis for [sentencing] enhancement[s].” Apprendi, supra, 530 U.S. at 475, 120 S.Ct. 2348 (emphasis added). Federal courts consistently have concluded that “Apprendi is about nothing but procedure — who decides a given question (judge versus jury) and under what standard (preponderance versus reasonable doubt).” Curtis v. United States, 294 F.3d 841, 843 (7th Cir.2002); see also United States v. Swinton, 333 F.3d 481, 488 (3d Cir.2003) (“The courts of appeal that have considered this issue have held that Apprendi establishes a procedural rule.”). The Court has recognized an exception allowing retroactive application for a new rule of criminal procedure, but that exception has very limited application. The Court “give[s] retroactive effect to only a small set of watershed rules ... implicating the fundamental fairness and accuracy of the criminal proceeding.” Schriro, supra, 542 U.S. at 352, 124 S.Ct. 2519 (internal quotation marks and citations omitted). We conclude, as have federal courts, that “the rule in Apprendi is not a ‘watershed’ rule that improved the accuracy of determining the guilt or innocence of a defendant^] Mather, the accuracy improved by Ap-prendi is the imposition of a proper sentence, and Apprendi did not alter our understanding of bedrock elements essential to a fundamentally fair proceeding.” Swinton, supra, 333 F.3d at 490 (citing United States v. Brown, 305 F.3d 304, 309 (5th Cir.2002)); see also United States v. Moss, 252 F.3d 993, 997 (8th Cir.2001).
In sum, like the federal courts, we conclude that Apprendi is neither a substantive rule nor a watershed rule of criminal procedure, and it does not apply retroactively to cases on collateral review. Ap-prendi was decided in 2000, after Mr. Long’s conviction became final, and he cannot pursue this issue on a collateral attack. Thus, even if his claim was not procedurally barred, his challenge would fail.
Accordingly, for the foregoing reasons, we affirm the trial court’s judgment of conviction, and its judgment denying Mr'. Long’s D.C.Code § 23-110 motion. We also affirm the trial court’s denial of Mr. Long’s Super. Ct. Civ. R. 35 renewed motion for correction of sentence.
So ordered.
. Mr. Tilghman testified as a government witness after entering into a plea agreement under which he pled guilty to voluntary manslaughter while armed. Long I, 910 A.2d at 302.
. One of the potential witnesses whom we mentioned specifically in Long I was Timothy Padgett. On April 24, 2008, counsel for Mr. Long, Thomas Heslep, announced that he was “not going to call [Mr. Padgett] at this point” because "he’s unsure of himself, and I can't put him on.” In Long I, we noted that Mr. Padgett had signed an affidavit on September 19, 2002, indicating that on the day following Mr. Williamson’s murder, Mr. Tilghman attempted to sell him (Mr. Padgett) a black revolver; and that he was in jail with Mr. Tilghman in October 1996, when Mr. Tilgh-man "used to tell [him] how he caught Man-Man [Mr. Williamson] slipping and killed him.” 910 A.2d at 306, 307 n. 7 (internal quotation marks omitted).
. Mr. Tilghman’s name is spelled "Tillman” in the transcript regarding the § 23-110 hearing, but we use the same spelling that appeared in Long I.
. Mr. Long’s defense theory was that he could not have shot Mr. Williamson because of an injury to his right hand, as evidenced by the hard cast that Mr. Andrews saw.
.A mistrial was declared as to all of the charges against Mr. Long, except carrying a pistol without a license; Mr. Long was found guilty of that offense.
. Mr. Plummer's retrial began on June 25, 1998 and Mr. Long’s retrial took place from June 22 through July 1, 1998.
. In Long I, we indicated that Mr. Long wanted Ms. Rauch called as an alibi witness. Id. *369at 309. According to Mr. Long, the private investigator his family hired had contacted Ms. Rauch and scheduled a meeting, but Ms. Rauch did not show up for the meeting. Mr. Heslep apparently was unable to find Ms. Rauch at the time of the § 23-110 hearing.
. Ultimately, the confession was suppressed.
. Defense counsel argued in closing that Ms. Thomas did not immediately identify Mr. Long as the shooter and that she could not tell who was the shooter, and she used cocaine; although Ms. Wheeler said she saw Mr. Long shoot Mr. Williamson, she acknowledged on cross-examination that it was dark, she was sleepy, and she could not tell who did the shooting, and her mother testified that she was not in the bedroom facing the alley and hence could not have seen the shooting; and while Ms. Green testified that she was certain that the man she saw running in the alley on the night of the shooting was Mr. Long, she told the detective the morning after the shooting that the man looked like Mr. Long.
. We are unpersuaded by Mr. Long’s arguments regarding Mr. Baer’s investigation of Mr. Long's hand injury, and the lack of nighttime photographs of the crime scene. Mr. Baer interviewed the doctor at the D.C. Jail who indicated that the hand injury would not prevent Mr. Long from firing a gun. Nighttime photographs of the crime scene taken long after the crime was committed might not accurately reflect the scene on the night of the actual crime. At any rate, and even assuming deficient performance by trial counsel, in light of the testimony of the government's eyewitnesses, which the jury could credit, we see no "reasonable probability that the result of the proceedings would have been different.” Strickland, supra, 466 U.S. at 694, 104 S.Ct. 2052.
. Mr. Long cited "D.C.Code § Rule 35(a)" as the grounds for his motion, but the context of his motion makes clear that he intended to cite Super. Ct.Crim. R. 35(a).
. We note that Mr. Long could have pursued this challenge in his direct appeal, as the appellant did in Keels v. United States, 785 A.2d 672 (D.C.2001).