Nix played for the Texas A&M Kingsville Javelinas and was named to the Associated Press Little All-America squads three times, in 1966, 1967 and 1968.[2][3]
After graduation, he served in the United States Marine Corps as a helicopter pilot, in the Vietnam War, initially flying Bell UH-1 Hueys. In 1974 he went to work for Bell Helicopter and later NAVAIR in Iran, before being evacuated in 1979.[1] That year he was named to the Kingsville Javelina Hall of Fame.[2]
Nix remained with the Marine Corps as a reserve officer for 23 years, serving in the Gulf War during that time.[5] In 2003, Nix retired from the Marine Corps reserves as a colonel where he served as the Assistant Deputy Director, Operations Division in the Plans, Programs and Operations Department at Marine Corps Headquarters in Washington, D.C.[1]
In 2016, Nix was named to the Lone Star Conference Hall of Honor.[6]