Satisfaction of the government's burden of proof in a criminal trial requires submission of sufficient evidence to support a verdict of proof beyond a reasonable doubt.

United States v. Kennedy, 32 F.3d 876, 885-886 (4th Cir. 1994) (upholding trial court's admission of witness's testimony about accused's drug distribution activities because it was "proof of the existence and structure of the charged drug distribution conspiracy" which provided "the jury with background...Evidence that helps tell a factual story in an intelligible way or that puts the evidence or the issues in the case in a meaningful or intelligible context is "relevant."

Fed. R. Evid. 608.Under some circumstances untruthfulness is admissible to impeach a witness.

Aliotta v. AMTRAK, 315 F.3d 756, 763 (7th Cir. 2003) (holding, in plaintiff widow's wrongful death action against defendants passenger train company and engineer, that the trial court erroneously excluded the....A statement is imputed to a principal or to an employer and is treated as the principal's or employer's vicarious admission (which, like other admissions is exempt from the hearsay rule) if the principal or employer is a party, the statement is offered against the principal or party, the statement is a statement by the party's agent or employee about a matter within the scope of the agent's agency or the employee's employment, and the statement is made during the principal-agent or employer-employee relationship.