The Killer Elite

The Killer Elite is a 1975 American action thriller film starring James Caan and Robert Duvall and directed by Sam Peckinpah.

Mike Locken James Caan and George Hansen Robert Duvall are best friends and private contractors for a private intelligence agency, Communications Integrity or ComTeg, which handles covert assignments for the CIA. At the beginning of the film, Locken and Hansen are helping an East European defector, Vorodny Helmut Dantine escape. After delivering the defector to other ComTeg operatives, Locken and Hansen throw a wild party to relax. The next day, they go to a ComTeg safehouse to relieve other agents who have been guarding Vorodny, the defector they previously helped escape.Hansen, having been bought out by an unknown rival group, assassinates Vorodny, and then critically wounds Locken in the knee and elbow, telling Locken that hes, just been retired. ........

Source: Wikipedia