He succeeded in rescuing Dr. Drago Pettrovich Madnar and destroyed Metal Gear TX-55 with the aid of Gray Fox. Big Boss, his mission commander, then revealed himself to be the leader behind the Outer Heaven uprising, but he was promptly dispatched by Snake. Despite Snake's success in this mission, Snake departed from FOXHOUND and entered early retirement.
Later he was scouted by the CIA and spent six months as a deep cover agent before he became dissatisfied with the system and left. He then became a mercenary for hire, and after earning enough money, he went into semi-retirement in the Canadian wilderness.