Casey Viator was the youngest ever AAU Mr. America - gaining the title at the age of 19 in 1971.
Viator grew up in New Iberia, Louisiana. In 1968, Viator placed third in the Mr. Louisiana contest. The following year, he came in sixth in the 1969 Teen Mr. America, but won in the categories best arms, best abs and most muscular. Casey Viator had extremely large forearms proportional to the rest of his body.
He trained under the guidance of Arthur Jones for ten months prior to the Mr. America contest at DeLand High School in DeLand, Florida. The two first met briefly at the 1970 Mr. America contest in Los Angeles, California, where Viator placed third. Realizing Viator's potential, Jones offered Viator a job at his new company, the Nautilus Group.
All in the same year, Viator won three separate bodybuilding championships; Teen Age Mr. America, Jr. Mister America, and lastly, the title of Mr. America. In 1982 he capped off his bodybuilding career by placing third in the Mr. Olympia competition.
Viator was a writer for Muscle & Fitness and Flex magazines.
Viator died on September 4, 2013 due to a massive heart attack. He was 62 years old.

Titles won:
1970 AAU Teen Mr. America
1970 AAU Teen Mr. America (Most Muscular)
1970 AAU Mr. USA
1971 AAU Mr. USA
1971 AAU Jr. Mr. America
1971 AAU Mr. America
1980 IFFB Louisiana Grand Prix
1980 IFFB Pennsylvania Gran Prix
1980 Pittsburgh Pro Invitational

Source: Wikipedia.org