S5·E20 Suspended

Reed spends an evening on the firing range, then stops by an all-night grocery store. When Reed leaves, a man approaches him as if he knew him, then points out another man in a green Beetle holding a gun on the officer. Reed drops his groceries, shoves the man, jumps and fires at the Beetle driver, hitting the car, but the man in the Beetle shoots his accomplice. The grocer swears he only heard one shot, and the accomplice gives a dying declaration that Reed was trigger-happy and shot him, leading to Reed's suspension. Malloy and his by-the-book replacement partner locate the green Beetle (now yellow) after going through numerous DMV checks and locate the other man, exonerating Reed.