William "Dave" Davis trained under Ajarn Precha at the original school in Ubon Thailand, while he was stationed there in the early 1970s.

Upon his return to the U.S., he taught at Edwards Air Force  Base in California

This picture depicts Davis on the left, Ajarn Precha in the center, and Wendell Hockaday on the right.

William "Dave "Davis presenting students with their yellow belt at Edwards Air Force Base near Los Angeles, California.

This picture shows William "Dave" Davis sparring with Roy Harrington at Edwards Air Force Base.