How have the courts considered the credibility of witnesses in a sexual assault case?

The prosecutor also analyzed the credibility factors as they related to the defense witnesses and argued that the company schedule sheet and timecards showed their testimony was not reliable. The prosecutor asked the jury to consider the relative credibility of the witnesses in light of other evidence presented, e.g., the DNA on the gloves. Because the prosecutor did not draw on the credibility of her office or introduce facts outside the record to bolster her witnesses' credibility, she did not engage in improper vouching of witnesses. (People v. Medina (1995) 11 Cal.4th 694, 757 ["Prosecutorial assurances, based on the record, regarding the apparent honesty or reliability of prosecution witnesses, cannot be characterized as improper 'vouching' "].)