Mason was born on June 3, 1933 and raised by Dot Mason (and his unnamed Mother) in Fairbanks, Alaska; the geographical proximity of his home state to Communist Russia brought the threat of the Cold War much closer to his doorstep than most Americans. This was a key contributor to his fervent anti-Communist ideals and eventually led to his enlistment in the USMC. He spent his youth hunting elk and grizzlies in the Alaskan wilderness with his father (A WWII veteran and recipient of the Purple Heart for wounds received during action at the Makin Atoll); as such, he is adept in cold weather environments and is an excellent sniper; at the age of 23 he became the youngest Wimbledon Cup winner in the history of the marksmanship competition.
He was recruited to SAD/SOG at the age of 25 after an exemplary term of service with the Marines.