From Wikipedia, the free encyclopedia. Vaughn Dale Armstrong (born July 7, 1950 in Sonora, California) is an American actor. Armstrong served in the United States military and saw action in the Vietnam War. Star Trek Vaughn Armstrong is one of the longest-serving actors in the Star Trek franchise, having appeared in every Trek series but the original. He has played twelve different characters over the years - a record unmatched by any other actor in Trek. Armstrong's first appearance in Trek...