That's a rat? Shit, that ain't hardly a baby mouse. Got rats down at the port so big you'd think they were possums, except they'll fight you instead of pass out.
Sure you wouldn't have just called that officer into your office and said, "Look, man.. You're a smart guy and all, but this job requires laying your life down when necessary. We just can't have folks on the force that'll run away at the first sign of a rat. We wish you luck in your future endeavors, and will provide a good recommendation for any other career path you choose, so long as it has zero to do with public safety."
Yeah, after firing the guy... "Listen up. We're gonna watch a video. This video resulted in the IMMEDIATE TERMINATION of the employee involved. Don't be this employee."