The federal hearsay exception for past recollection recorded applies only if the witness who made the memorandum or record no longer has sufficient recollection to testify truthfully and accurately about the matter recorded in the memorandum or record.

Fed. R. Evid. 407 ("This rule does not require the exclusion of evidence of subsequent measures when offered for another purpose, such as proving ... feasibility of precautionary measures, if controverted").Although subsequent remedial measures may not be used to prove negligence, culpable conduct, a defect in the product or its design, or a need for warning or instruction, subsequent remedial measures are admissible to show the feasibility of precautionary measures.

United States v. Clemmons, 461 F.3d 1057, 1061 (8th Cir. 2006) (upholding trial court's admission of the shooting victim's statements to the police as excited utterances because even though "Officer Lester testified that....Federal Rule of Evidence 803(2) or a comparable State rule creates a hearsay exception for an utterance that relates to a startling event or condition and is made while the declarant -- the maker of the statement -- is excited as a result of the starling event or condition.

Fed. R. Evid. 804(b)(1) ("Former testimony. Testimony given as a witness at another hearing of the same or a different proceeding, or in a deposition taken in compliance with law in the course of the same or another proceeding, if ..., in a civil action or proceeding, a predecessor in interest, had an opportunity and similar motive to...The hearsay exception for prior testimony applies in a criminal case only if the if the party against whom the testimony is now offered had an opportunity and similar motive to develop the testimony in the prior proceeding by direct, cross, or redirect examination. The exception applies in a civil action or proceeding only if the party against whom the testimony is now offered or a predecessor in interest had an opportunity and similar motive in the prior proceeding to develop the testimony by direct, cross, or redirect examination.