If a criminal defendant offers evidence of his or her character circumstantially - to show he or she did not commit the crime charged -- the prosecution can offer rebutting evidence of defendant's character.

Forrest v. Beloit Corp., 424 F.3d 344, 356 (3d Cir. 2005) (personal injury resulting from accident at paper mill; "There is little doubt that as a general matter evidence concerning the absence of prior accidents can satisfy the relevance threshold established by Rule 402. Courts have indicated that such...To be admissible, the absence of other similar events or accidents must be relevant and not unduly prejudicial

United States v. Johnson, 297 F.3d 845, 862-864 (9th Cir. 2002) (upholding trial court's admission of the tapes and sales orders as business records because "AEA employees, acting in the ordinary course of business, were....The hearsay exception for "business records" created by Federal Rule of Evidence 803(6) or a comparable State rule applies only (i) the record is based on the personal knowledge of an entrant with a business duty to record the event or other such matter or (ii) if the record of the event is based on the personal knowledge of a person who had a business duty to transmit the information about the event or other matter to the person or persons who made the record and had a business duty to do so. A person has a "business duty" if the person has a duty to an organization by reason of law, contract, employment relationship, or other such matter to record or report an event, condition, opinion, or other matter to which the business records exception to the hearsay rule may apply.

Fed. R. Evid. 601 advisory committee's note ("This general ground-clearing eliminates all grounds of incompetency not specifically recognized in the succeeding rules of this Article. Included among the grounds thus abolished are religious belief, conviction of crime, and connection with the litigation as a party or interested person or...Every person is a competent witness unless a statute or a rule of evidence provides otherwise.