Ghost in the Shell: Stand Alone Complex 1x16

Batou goes undercover on a military base to shadow one of his former heroes, a man named Zaitsev who was an Olympic silver medalist. Now, however, he's under suspicion of espionage. Batou befriends him easily, and the two really seem to get along--which is unusual for Batou. But when Batou learns the truth behind his hero, he must make a very difficult decision.