Diego Garza was a CIA field agent working out of an airport in Miami. He was chosen by Michael Weston as his contact within the agency. Initially sarcastic and doubtful about Michael's plans to get back into the spy game, Garza was nonetheless involved in those plans as Michael's contact between himself and the agency. Unfortunately, Garza was later murdered by an associate of Strickler following his death. Diego was thrown from a fourth floor balcony shortly after warning Michael about said associate, who turned out to be master political assassin and gun-for-hire Mason Gilroy.