Section VII · Opinions and Expert Testimony

Rule 701. Opinion testimony by lay witnesses

2024 Manual for Courts-Martial, United States

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If a witness is not testifying as an expert, testimony in the form of an opinion is limited to one that is:
(a) rationally based on the witness' perception;
(b) helpful to clearly understanding the witness' testimony or to determining a fact in issue; and
(c) not based on scientific, technical, or other specialized knowledge within the scope of Mil. R. Evid. 702.