III.
The appellants allege that the trial court’s denial of their motion for a Bill of Particulars, which was designed to ascertain the precise manner in which each defendant aided and abetted in the commission of federal crimes, prejudiced them and made it difficult to prepare an adequate defense. See Rule 7(f), Federal Rules of Criminal Procedure. The granting or denial of a Bill of Particulars is within the sound discretion of the trial judge, and his decision will not be disturbed on review unless abuse or prejudice can be shown. Leary v. United States, 5 Cir., 1967, 383 F.2d 851, 862; Downing v. United States, 5 Cir., 1965, 348 F.2d 594, 599; Joseph v. United States, 5 Cir., 1965, 343 F.2d 755, 756 (per curiam); Robertson v. United States, 5 Cir., 1959, 263 F.2d 872, 874; Johnson v. United States, 5 Cir., 1953, 207 F.2d 314, 321; Wong Tai v. United States, 273 U.S. 77, 82-83, 47 S.Ct. 300, 302, 71 L.Ed. 545 (1927). See generally 8 Moore, Federal Practice fl 7.06 [2] (2d ed. 1968). However, such specific showings of prejudice or abuse are most difficult, and hence, in practice, reversals of the trial court on this issue are rare. See, e. g., Roberson v. United States, 5 Cir., 1956, 237 F.2d 536; United States v. White, 7 Cir., 1966, 370 F.2d 559; United States v. Doyle, 7 Cir., 1956, 234 F.2d 788; Jencks v. United States, 5 Cir., 1955, 226 F.2d 540. Thus, since the appellants have failed to specify precisely in what manner the denial of the motion prejudiced them, and have merely asserted that access to the requested information would have made the preparation of their defense less difficult, we hold that the' appellants have not met their burden, and that there was no abuse of discretion in the denial of their motion for a Bill of Particulars.
The traditional formula for testing the sufficiency of the evidence to sustain a jury verdict is whether there is “substantial evidence, taking the view most favorable to the Government.” Glasser v. United States, 315 U.S. 60, 80, 62 S.Ct. 457, 469, 86 L.Ed. 680 (1942).9 The testimony of the Government witnesses, including Sergeant Facemire, Lieutenant England, Sergeant Fuller, and Verbon Grimes, was clearly sufficient to indicate the guilt of the appellants. While the testimony of appellant Tillman significantly differed from that of the Government witnesses, the resolution of these contradictory statements involved credibility choices that were in the province of the jury. Hoffa v. United States, 385 U.S. 293, 311, 87 S.Ct. 408, 418, 17 L.Ed.2d 374 (1966); Belmarez v. United States, 5 Cir., 1966, 362 F.2d 544, 545 (per curiam); Bush v. United States, 1967, 126 U.S.App.D.C. 174, 375 F.2d 602; Hiram v. United States, 9 Cir., 1965, 354 F.2d 4, 6. Thus, there is no merit to the appellants’ challenge to the sufficiency of the evidence.
The appellants find error in the trial judge’s charge to the jury. We do not agree. First, it is alleged that there was error in failing to give appellants’ requested charge number four:
“In this connection, in order for a person to aid or abet another in the commission of a crime, it is necessary that he associate himself with the unlawful venture; that he participate in it with the desire of accomplishment, and that he seek to make it succeed by his actions.”
Rather, the court charged the jury that
“In order to aid and abet another to commit a crime, it is necessary that a
9
See also Lacaze v. United States, 5 Cir., 1968, 391 F.2d 516, 519; Moorman v. United States, 5 Cir., 1968, 389 F.2d 27, 32; Peters v. United States, 5 Cir., 1967, 376 F.2d 839 (per curiam); Walker v. United States, 5 Cir., 1962, 301 F.2d 94, 95; Ah Ming Cheng v. United States, 5 Cir., 1962, 300 F.2d 202; Gor-man v. United States, 5 Cir., 1963, 323 F.2d 51; United States v. Birnbaum, 2 Cir., 1967, 373 F.2d 250; Hiram v. United States, 9 Cir., 1965, 354 F.2d 4, 7.