The F.B.I. - Full Series Information, Trailer & IMDb Reviews
Watch The F.B.I. Season 4 Episode 13 online — it may be available on legal streaming platforms such as YouTube, Netflix, Prime Video, Hulu, Disney+, and others.
The F.B.I.: Donald Joseph Sayres: Unlawful Wearing of a Uniform, Murder. The crime is "Unlawful Wearing of the Uniform" and (by the way) murder. A con man wears a US Air Force uniform to entice women to marry him. He then murders or otherwise cheats them.