Episode 511, "Fit For Duty"
SEASON 3, EPISODE 307 - One of the great landmarks of the city is about to be torn down and turned into condos. A sniper shooting takes place in the arena and the SRU is called in. It turns out that the shooter is an ex-military war veteran and is a trained marksman. Sam connects with the young veteran by talking to him about his own tour of duty in Afghanistan, and what that does to any soldiers psyche. Everyone thinks Sam is making headway with the young man, but he tricks our group into believing he is giving himself up.