Appellant’s first trial on four counts of armed robbery, D.C.Code §§ 22-2901, -3202 (1981), ended in a mistrial. The jury found him guilty as charged after a second trial on two of the counts. He asserts that the prosecutor’s improper impeachment of his alibi witnesses so tainted the verdict as to require reversal.1 We affirm.
*889The testimony adduced at trial revealed that Marion Fleichman and Michael Taylor were working at a gas station in Northwest Washington early in the evening of January 6, 1981. Fleichman, seated at a desk in the small, well-lighted station office, observed a man walk toward the station, enter the office and ask for a can of transmission fluid. The two spoke for “two to three minutes” and then went outside to a rack where the fluid was stored. While Fleich-man selected the proper transmission fluid, the man remarked that he also needed some brake fluid and asked if he could use the rest room. Fleichman turned toward the man and told him that he could use the rest room inside the office. A few minutes later, Fleichman reentered the office to retrieve the can of brake fluid from a shelf at the back of the office. As he turned around, the man, who was standing “right behind” him holding a pistol, announced that “this is a stick-up.” Moments later, Michael Taylor came out of the office rest room and bumped into the man standing in front of Fleichman. Taylor looked at the man’s face and then “looked down and saw the gun” as the man warned him not to “go in [his] boots.” Taylor, who once carried a pistol while working at another gas station, put his hands up and backed away from the gunman. Holding the two station workers at bay, the gunman ordered them to the back of the adjoining garage where he told them to “give up [their] money.” He then reached into Fleichman’s pants pocket and removed approximately $100.00 as Taylor handed him two wallets. The gunman took the money from the wallets and then reached into Taylor’s pockets and removed some change. The gunman then locked the two workers inside the garage and made good his escape. Taylor called the station owner’s wife from a pay phone inside the garage; she, in turn, called the police who later released Fleichman and Taylor from the garage when they arrived at the scene.
A detective assigned to the case showed Taylor a series of ten photographs about a week after the robbery. Taylor selected appellant’s photograph, stating he was certain the man in the photograph was the robber. Taylor attended a subsequent lineup and was firmly explicit in his identification of appellant as the robber. Fleichman, who was shown a photograph of the lineup, positively identified appellant as the robber.
Appellant’s alibi defense was presented through the same witnesses at both trials. He argues that the prosecutor misconstrued the prior testimony of one of these witnesses, making it appear as though the witness had changed his testimony at the second trial.2 One witness, David Van-erson, testified that he first learned of the robbery shortly after appellant was apprehended. The prosecutor challenged that testimony several times by asking whether Vanerson had not in fact previously testified that “the first time [he] learned anything about [the robbery] was two weeks before the first trial in October, 1981.” Vanerson answered that it was “possible” he had so testified and attributed the apparent inconsistency to “mistake” and “confusion]” at the first trial. Defense counsel objected and urged the prosecutor to impeach Vanerson with, rather than simply question him about, his prior testimony. The objection was overruled, the court observing that the witness had admitted to the nature of, and change from, his prior testimony. However, Vanerson’s only testi*890mony on that point at the first trial was that he- recalled the events of January 6, 1981 (the day of the robbery) because he had discussed them shortly before the first trial. Despite the prosecutor’s suggestion, Vanerson never testified that he first learned of the robbery in October.
This impeachment procedure was lengthy, disorganized, and not in keeping with the usual practice which is to confront the witness by accurately recounting the substance of his prior testimony. Weaver v. Irani, 222 A.2d 846, 848 (D.C.App.1966); United States v. Smith, 172 U.S.App.D.C. 297, 521 F.2d 957 (1975) (text of prior inconsistent statement in police report shown to witness); Osborne v. McEwan, 194 F.Supp. 117, 118 (D.D.C.1961) (“[t]he interrogation on cross examination must identify the specific statement and indicate its contents ... ”); T. Mauet, Fundamentals of Trial Technique 272 (1980) (“[i]t is improper to summarize or paraphrase the [prior] testimony”).
Given the circumstances of this case, we conclude that the prosecutor’s efforts to impeach, though improperly implemented, do not warrant reversal. The government’s case was strong. Fleichman and Taylor were only a few feet from the gunman during the entire time they were confronted by him. The office and garage were bathed in the glow of bright florescent lighting, and both men were able to see the gunman’s face clearly. Furthermore, Taylor, who observed the gunman throughout the incident, testified that he was familiar with the gunman because he had previously “seen him in the Southeast area.” Jones v. United States, 119 U.S.App.D.C. 213, 214 n. 3, 388 F.2d 553, 554 n. 3 (1964) (“whether improper conduct of Government counsel amounts to prejudicial error depends, in good part, on the relative strength of the Government’s evidence of guilt”).
Conversely, Vanerson’s testimony was of minimal effect. He claimed to have learned of the robbery in a conversation with appellant a few days after his arrest. He further testified that although appellant had not told him the day or date of the robbery, he “guessed” the crime occurred on “Monday [January 5, 1981] or Tuesday [January 6, the day of the robbery]” after appellant mentioned that the crime took place “a few days ago.” The prosecutor’s “misstatements' [did not make] the difference between a strong alibi and no alibi.” Corley v. United States, 124 U.S.App.D.C. 351, 352, 365 F.2d 884, 885 (1966).
Given the strength of the government’s case and the character of Vanerson’s alibi testimony, we conclude that the jury’s verdict was not substantially swayed by the prosecutor’s interrogation. Thomas v. United States, 444 A.2d 952, 954 (D.C.App.1982), citing Kotteakos v. United States, 328 U.S. 750, 765, 66 S.Ct. 1239, 1248, 90 L.Ed. 1557 (1946).3
Affirmed.
. Appellant further maintains that reversible error attended the prosecutor’s characterization of the alibi testimony as “patently incredible.” He also contends that, during trial, the *889prosecutor improperly referred to the date of appellant’s arrest, a matter not in evidence. Neither contention has merit.
. During her cross-examination of a second alibi witness, the prosecutor asked whether he had testified that he immediately remembered what he was doing on January 6, 1981. The witness had not so testified and indicated as much in his response to the question. Appellant contends that the prosecutor’s questioning unfairly cast doubt on his alibi defense. However, defense counsel did not object to this question, and we may reverse only for plain error. The question was not sufficient to discredit the witness’ testimony and was not “so clearly prejudicial [to appellant’s] substantial rights as to jeopardize the very fairness and integrity of the trial.” Watts v. United States, 362 A.2d 706, 709 (D.C.App.1976) (en banc).
. A premise of the dissent is that the prosecutor deliberately misled the witness in an attempt to distort the effect of his earlier testimony. In our view, the record does not support this interpretation of the prosecutor’s motives. The witness’ testimony was equivocal and unclear; the trial judge, in an effort to resolve some of the ambiguity, permitted extensive questioning.
Similarly, we disagree with the dissent’s speculation regarding the deliberations of the two juries in this case; we do not believe that such surmise can be used to support its position.