Appellant Jerry Mack Dorrough and one co-defendant, Gerald Ray Johnson, were convicted in the United States District Court for the Northern District of Texas of robbing a postal employee of a postal vehicle and, while so doing, placing in jeopardy the life of the postal employee by the use of a dangerous weapon in violation of 18 U.S.C. § 2114.1 Appellant had effectively waived the court’s offer to appoint counsel to represent him, pleaded guilty to the charge, and was sentenced to twenty-five years imprisonment, the mandatory penalty provided by statute for the offense charged.
The facts of the crime itself are not in dispute. Appellant and his co-defendant, Johnson, were cellmates in the Dallas County jail pending appeal from state convictions. On May 27, 1963, wielding razor blade knives constructed of four razor blades bound and secured to a spoon, they overpowered a jailer, took him with them as a hostage, and effected their escape. Dorrough had fashioned and put together both weapons, which were substantially identical, and one of them was transmitted to this Court for our examination. Pursued by law en*889forcement officers into the street, Dorrough and Johnson with the weapons in their hands approached a United States special delivery station wagon stopped at a traffic signal, whereupon Johnson opened the door opposite the driver, demanded the vehicle, and ordered the driver out.2 The driver, thinking he “would be killed” if he failed to comply, immediately fled the vehicle by the door on the driver’s side. Johnson and Dorrough, still holding the jailer as hostage, drove the vehicle to the Brook Hollow section of Dallas, where they abandoned the postal wagon and stole two private cars in succession, finally wrecking the second and releasing the jailer in Saint Jo, Texas.
Johnson was captured near Saint Jo on May 29, 1963, was returned to Dallas, and verbally admitted that he and Dorrough had taken the mail truck and that he, Johnson, had threatened the carrier with the razor knife. Dorrough remained at large until June 1, 1963, when he was apprehended and ultimately returned to Dallas. When questioned in Saint Jo immediately after his arrest, appellant testified that he told Postal Inspector Thomas that “it was kind of ridiculous” to ask for a written statement, “since 50 people had seen this particular postal car.”
On June 14, Dorrough was brought before the district court on a one count information charging him with a 28 U. S.C. § 2114 violation. Dorrough waived indictment and his right to counsel.3 During the proceedings, appellant was advised that he was charged with robbing a postal employee and putting in jeopardy the life of the postal employee and that the offense carried a mandatory penalty of 25 years. Dorrough told the court that he understood the charges against him and entered a plea of guilty. Dorrough was subsequently convicted and sentenced to twenty-five years imprisonment.
*890This is the third motion for relief under 28 U.S.C. § 2255 to reach this court. The two previous appeals, reported at 327 F.2d 667 (1964) and 344 F.2d 125 (1965), were affirmed per curiam. The present proceedings began when letters written by Dorrough challenging the validity of his plea and sentence were treated by the district court as an application for relief under 28 U.S.C. § 2255.4 Leave to proceed in forma pauperis was granted, and counsel was appointed to represent Dorrough. Appellant, then filed an amended motion to vacate and set aside his sentence. On July 13, 1966, a hearing was held and the district court found that appellant’s plea of guilty was understandingly and voluntarily made and that appellant had placed the postal employee’s life in jeopardy.5 At this plenary hearing the appellant was present with court-appointed counsel and he testified at length. Appellant’s motion was denied.
For a reversal of the district court’s denial of his motion, Dorrough alleges that the above findings are clearly erroneous. After a thorough and careful review of the record, we conclude that the district court’s findings are amply supported by the evidence.
I.
Rule 11 F.R.Crim.P. provides that the court “shall not accept the plea [of guilty] without first determining that the plea is made voluntarily with understanding of the nature of the charge.” 6 While it is true that the trial court need not observe any particular ritual to satisfy Rule 11, Hulsey v. United States (5 Cir. 1966) 369 F.2d 284; United States v. Davis (7 Cir. 1954) 212 F.2d 264, it is equally true that routine questions on the subject of understanding are insufficient. Munich v. United States (9 Cir. 1964) 337 F.2d 356; United States v. Lester (2 Cir. 1957) 247 F.2d 496; Smith v. United States (5 Cir. 1956) 238 F.2d 925. Moreover, when a defendant seeks to proceed without counsel and to enter a guilty plea, an even more exacting inquiry should be made and is demanded of the trial court. In the case of United States v. Lester, supra, the defendant, without counsel, changed his not guilty plea to one of guilty on the allegedly mistaken belief that he was pleading guilty to a misdemeanor and not a felony. The court reversed, holding that the district court’s perfunctory inquiry on the subject of understanding was insufficient, since “ [comprehension of the charge demands more than familiarity with the crime alleged.” 247 F.2d at 500.
What comprehension an accused had of the nature of the charges against him and of the possible defenses available to him can only be determined from what is shown on the record. A single response by the defendant that he “understands” the charge gives no assurance or basis for believing he does. Munich v. United States, supra. However, the transcript of the June 14 proceedings at which time appellant pled guilty discloses that both the prosecuting attorney and the trial court carefully explained to Dorrough the charge against him.
The prosecuting attorney, while informing appellant that he was entitled to have the facts against him presented to the Grand Jury, described the offense as “robbery of a postal employee and *891putting the life of the postal employee in jeopardy.” A copy of the proposed information had previously been given Dorrough and he acknowledged that he had read it. However, the prosecutor went on to state its contents, that Dorrough was charged with wilfully and feloniously robbing a substitute city carrier of the Post Office of a United States Post Office vehicle and that in committing the robbery Dorrough put the life of the postal employee in jeopardy by the use of a dangerous weapon, to-wit, a razor blade knife. Dorrough then stated he understood the charge, and expressed a desire to waive indictment. The waiver of indictment forms were produced whereupon it was noted that the original copy described the offense as merely robbery of a postal employee. However, the phrase “and putting in jeopardy the life of the postal employee” had been penned in. It was again carefully explained to Dorrough that the charge against him included both the robbery and putting the postal employee’s life in jeopardy.7
The trial court, before accepting the guilty plea, took great pains to ascertain that Dorrough was aware that he was pleading guilty to robbery of a postal employee and putting his life in jeopardy, a crime carrying a mandatory twenty-five year penalty.8
Thus, the record demonstrates that not only was the offense for which Dorrough was charged explained to him several times with great care on the part of the prosecutor and the trial court, but also the cqurt repeatedly inquired of Dorrough.,! as to his understanding of the charge.. - We do not find such proceeding to be a “perfunctory inquiry” into Dorrough’s understanding of the nature of the charge. Nor is the statutory offense for which Dorrough was charged complicated or difficult to understand. Moreover, Dorrough was well aware of the acts he committed while effecting his escape on May 27, 1963, namely, while he and his partner were wielding lethal weapons they ordered such employee to abandon his vehicle. At the very moment the knives were in full view, the *892jailer was in custody, Dorrough was obviously in position to cut the jailer’s throat, and Johnson was free to act with his knife. There is little wonder that the driver of the postal vehicle took flight, and in our view, his conclusion that he would be killed if he did not obey orders was amply justified.9 In fact Dorrough does not deny, nor has he ever denied, his participation in these events. He and Johnson were partners in the crime and were acting in concert in the accomplishment of their purposes. Since the charge itself is an exact and concise description of Dorrough’s actions on the above date, it would be difficult to say that Dorrough did not understand completely the offense described in the charge.
Furthermore, the allegation that in effecting the robbery the defendant did “then and there put in jeopardy the life” of the postal employee appeared throughout the proceedings and Dorrough was informed of such charge from the very beginning. The fact that the life of the carrier was placed in jeopardy was set forth in the original complaint, in the warrant of arrest, the hearing before the Commissioner related thereto, the final commitment issued by the Commissioner so described the offense, the information filed contained the charge and the waiver of the indictment so described it. As stated earlier, not only did Dorrough sign the waiver of indictment, he initialed that portion of the waiver which contained the interlineation “and putting in jeopardy the life of the postal employee.” From the beginning to end all the documents relating to the case fully informed Dorrough that he was charged with putting in jeopardy the life of the postal employee.10
*893The record further discloses that Dorrough was not a stranger to the courtroom. This was not the first time he had been charged with a crime which endangered the life of another. He was being held in the Dallas County jail under a conviction for armed robbery and had received a sentence of 25 years. Earlier he had been convicted on another charge of armed robbery. In the episode under consideration he and his partner had threatened the jailer’s life. They had also threatened the life of the chief jailer in effecting their escape with the jailer who remained their hostage. The testimony in the record demonstrates that Dorrough is intelligent and alert.11
Strongly relying on Von Moltke v. Gillies, 332 U.S. 708, 68 S.Ct. 316, 92 L.Ed. 309 (1948); United States v. Commonwealth of Pennsylvania (3 Cir. 1965) 343 F.2d 447; United States v. Lester (2 Cir. 1957) 247 F.2d 496, 500; Munich v. United States (9 Cir. 1964) 337 F.2d 356, other similar cases, and Rule 11 F.R.Crim.P., the appellant strenuously contends that he was not adequately informed of the nature of the charges against him and that his plea was not voluntarily made with understanding of the nature of the charge and the consequences of the plea. He also contends that the offense with which he was charged contained a lesser included offense which provided for only a ten year mandatory penalty and that it was incumbent upon the trial court to fully advise him of this fact. We reject all of the contentions of the appellant and conclude that the requirements of the decisions and Rule 11 F.R.Crim.P. were fully complied with. When the charge against the defendant completely, adequately and accurately describes the conduct of the defendant and when the evidence and circumstances clearly demonstrate that the defendant was fully aware and consciously participated in such conduct, we believe it is unnecessary to require the court to go into detailed and fine spun explanations and definitions of other crimes with which the defendant might have been charged. In this case the offense as described in the information exactly coincides with the conscious conduct of the appellant. The facts, the circumstances, the testimony of other witnesses and indeed, the testimony of the appellant himself all clearly demonstrate that his plea was made voluntarily with understanding of the nature of the charge and the consequences of the plea. See United States v. Rizzo, 362 F.2d 97, 99 (7 Cir. 1966); United States v. Lowe, 367 F.2d 44 (7 Cir. 1966). The cases relied upon by the appellant are clearly distinguishable on a factual basis and are inapposite.12 We. conclude that the guilty plea was entered simply because Dorrough knew that he was guilty. (See footnote 8, supra). From our review of the record of the district court proceedings whereat Dorrough pled guilty as charged and the record of the plenary hearing on his motion, we cannot conclude that the court’s finding is clearly erroneous.
II.
Appellant next contends that he was denied due process of law because *894there was no factual basis for his plea of guilty.13 He argues that he and his confederate were not armed with weapons which would inflict wounds from any distance and that, never having the postal employee completely within their power, it was impossible for them to have put the employee in legal jeopardy as that term was defined in Smith v. United States (5 Cir. 1960) 284 F.2d 789, 791. The district court, however, found specifically that the “victim’s life was placed in jeopardy by Dorrough.” We hold that there was ample evidence to support the district court finding. The fact that a man flees does not prove he was not in jeopardy. The razor blade knives wielded by Dorrough and his confederate were designed for more than admiration of their skillful construction. By effective use, they were certainly capable, as the district court must have concluded, to have jeopardized a man’s life if the man had not moved quickly enough, or tripped, or had his path impeded.
III.
Appellant’s final contention is that his guilty plea was not voluntarily made. His claim is that it was induced by postal inspector Thomas’s allegations that state charges would not be filed if Dorrough pleaded guilty to the federal offense, that he would be making a mistake if he did not do so, that the state authorities were reluctant to release him, and that he might get two life sentences if he were prosecuted in state court. Thomas’s testimony at the district court hearing rebutted Dorrough’s allegations, and the district court found as a fact that “there was no discussion between the Petitioner and the postal inspector as to whether it was to the best interest of the Petitioner to plead guilty.” Neither this finding nor the finding that the plea was voluntarily made can be termed clearly erroneous, and we dismiss this contention as being wholly without merit.
Judgment affirmed.
. § 2114. Mail, money or other property of United States
“Whoever assaults any person having lawful charge, control, or custody of any mail matter or of any money or other property of the United States, with intent to rob, steal, or purloin such mail matter, money, or other property of the United -States, or robs any such person of mail matter, or of any money, or other property
of the United States, shall, for the first offense, be imprisoned not more than ten years; and if in effecting or attempting to effect such robbery he wounds the person having custody of such mail, money, or other property of the United States, or puts his life in jeopardy by the use of a dangerous weapon, or for a subsequent offense, shall be imprisoned twenty-five years.”
. At the plenary hearing on the 2255 motion Dorrough first testified that he did not recall what was said to the driver of the vehicle when it was taken. However, when confronted with a sworn pleading filed in this case by Dorrough on a prior motion he testified:
“Q (By Mr. Rankin) In that pleading, Mr. Dorrough, it says, ‘When the Petitioner and his Co-Defondant and Jailer reached the postal vehicle, the Petitioner’s co-defendant opened the right door of the vehicle and told the postal employee to get out or he, Jerry Mack Dorrough, would cut the jailer’s throat’ — is that what your co-defendant told him?
A Yes, sir, that’s correct.
Q And that was at the door of the vehicle when he was wielding this instrument which has been introduced in evidence, is that correct?
A That’s correct.
Q Now, Mr. Dorrough, you said you fashioned those knives, did you not?
A Yes, sir.”
Further, Dorrough testified that he was with Johnson at the vehicle when it was taken, but that he, Dorrough, was busy holding the jailer hostage with the other knife. Immediately Dorrough and Johnson entered the vehicle, forced the jailer into it and took flight.
. “THE COURT: Mr. Dorrough, will you stand up, and you may stand up, you and Mr. Johnson, one at a time. You do not have a lawyer?
THE DEFENDANT DORROUGH: No, ma’am.
THE COURT: You don’t have the money for one?
DORROUGH: No, ma’am, I don’t have . any money for one.
THE COURT: Do you know that if you wish a lawyer, I will appoint one for you, and it won’t cost you anything?
DORROUGH: Yes, ma’am.
THE COURT: Do you want me to appoint a lawyer?
DORROUGH: No, ma’am.
THE COURT: You have given it consideration?
DORROUGH: Yes, ma’am, I have given it lots of consideration.
THE COURT: You have been in jail some time?
DORROUGH: Yes, ma’am, I’ve given it lots of consideration.
THE COURT: And, you are sure you don’t want mo to appoint a lawyer for you?
DORROUGH: Yes, ma’am, I’m sure.
THE COURT: All right, you may have a seat.”
. The issues raised by appellant in this proceeding, which are discussed in detail later in the opinion, were not before this court in either prior proceeding.
. The findings made by the district court are as follows:
“1. That there was no discussion between the Petitioner and the postal inspector as to whether it was to the best interest of the Petitioner to plead guilty. 2. The victim’s life was placed in jeopardy by Dorrough.
3. Petitioner understood the charge against him when he was arraigned in court. Petitioner’s plea was voluntarily and understandingly made.”
. Rule 11 was amended after the defendant entered his plea of guilty. However, we have considered the rule to be declaratory of the then existing law.
. In fact, when Dorrough signed the waiver of indictment, he initialled the written in portion.
. “THE COURT: Will you stand up, Mr. Dorrough, please. You have heard the charged [sic] explained to you, and you have heard the information read to you. Are you sure that you understand that you are charged with the robbery of a postal employee and putting in jeopardy his life?
DORROUGH: Yes, ma’am.
THE COURT: You have also heard from the U. S. Attorney what the maximum penalty is, or what the penalty is, because, you know, it is mandatory. If you plead guilty or are found guilty, the punishment is assessed at twenty-five years in the penitentiary. Do you know that ?
DORROUGH: Yes, ma’am.
THE COURT: Now, some offenses require a penalty and likewise prohibit any parole sooner than the maximum penalty. That is not the case in this instance. Even though the mandatory penalty is twenty-five years, that doesn’t mean that you wouldn’t get out in less time than that, depending on the circumstances.
Do you understand that?
DORROUGH: Yes, ma’am.
THE COURT: Now, understanding what the charge is and understanding what the penalty is, do you wish to plead Guilty or Not Guilty.
DORROUGH: I wish to plead Guilty, ma’am.
THE COURT: You are sure of that?
DORROUGH: Yes, ma’am.
THE COURT: You have likewise given this matter consideration, you have read in the paper that the penalty was a mandatory penalty of twenty-five years?
DORROUGH: Yes, ma’am.
THE COURT: Has anyone talked you into pleading Guilty against your own belief about it?
DORROUGH: No, ma’am.
THE COURT: The District Attorney has not promised you anything?
DORROUGH: No, ma’am.
THE COURT: Nobody has promised you anything to plead Guilty?
DORROUGH: No, ma’am, not anyone.
THE COURT: You make that plea simply because you know yourself to be Guilty?
DORROUGH: Yes, ma’am.
THE COURT: I find you Guilty then, cn your plea of Guilty. You may have a seat.”
. The following is from the record on the plenary hearing of the 2255 motion:
“Q (By Mr. West) Jerry, what did Mr. Stradford say when he was testifying before the Commissioner with respect to the question of his life being in jeopardy?
A He said the reason he left the ear was because he thought his life — he would be killed.”
*****
“Q (By Mr. West) What did Mr. Stradford say?
A The Commissioner asked him or asked a question or the U. S. Attorney there asked him why did he leave the car — why did he leave it — he was supposed to be delivering the mail and they asked him why did he leave the car, and he said, ‘The reason I left the car was because I thought I would be killed’— that’s the reason — that’s what he said.”
* -1* * * *
“Johnson verbally admitted that he and Dorrough had robbed Carrier Stradford of the mail truck and that the knife was used to threaten Stradford. Johnson admitted that it was he who actually held the knife on Stradford forcing him from the car.”
(This last quotation is from the sentence data presented at the plenary hearing.)
. At the plenary hearing Dorrough testified as follows:
“Q. (By Mr. Rankin) At this proceeding in which you pled guilty, the only accusation that was made and ever made against you was that you robbed the vehicle and put the man’s life in jeopardy, is that not correct?
A. Yes, that’s correct.”
Upon being asked why he did not raise the question about his understanding of the meaning of putting the postal employee’s life in jeopardy, Dorrough responded:
“Q. Why didn’t you bring it up then?
A. Because I had already had it in my mind to plead guilty.
Q. Well, the Judge asked you about all that — why didn’t you tell the Judge about it?
A. Well, I already had it in my mind to plead guilty and I just didn’t mention it.”
Also at the hearing the postal inspector testified as follows:
“A. In reading over my reports I see that I said merely that he was interviewed and that he at that time — at the time of the interview — orally admitted having placed the life of the postal employee in jeopardy in effecting the robbery of the mail truck.
Q. This would have been a report after the St. Jo interview, would it not?
A. It would have been a report after all interviews. You see, I submitted no reports of my investigation until after the Commissioner’s hearing, and then I submitted my first report, taking into consideration everything that had happened up to that time.”
. The following is from the transcript of record at the time of sentencing:
“THE COURT: Mr. Dorrough, will you stand up, please? Would you like to say anything?
THE DEFENDANT DORROUGH: Yes, ma’am, I realize it is a mandatory sentence and I realize very much the seriousness of this crime and the seriousness of the other crimes. However, I do not think it is necessary for me to spend approximately twenty-five or thirty flat years in prison, and I would like to have some way to have these sentences run concurrently, if possible. I would appreciate it very much.”
This reference was to the state sentences which had been imposed on Dorrough for other crimes.
. It has also been decided that “the ten year crime” and “the twenty-five year crime” proscribed by the statute are different offenses, Wells v. United States, 311 F.2d 409 (10 Cir. 1962); Hood v. United States, 152 F.2d 431 (8 Cir. 1946); Schultz v. Zerbst, 73 F.2d 668 (10 Cir. 1934) and Bent v. United States, 340 F.2d 703 (8 Cir. 1955).
. This allegation is bottomed on Rule 11, Fed.R.Crim.P. which was amended in 1966 by addition of a new sentence requiring that “[t]he court shall not enter a judgment * * * unless it is satisfied that there is a factual basis for the plea.”