Vaughn Dale Armstrong (born July 7, 1950) is an American actor. He is noted for portraying many characters in the Star Trek franchise, across four different Star Trek television series. He is perhaps best known as the recurring character Admiral Maxwell Forrest in Star Trek: Enterprise. He has played twelve different Star Trek characters.In 1985, Armstrong portrayed drill instructor Sergeant Williams in a production of the play Tracers at the Coronet Theater in Los Angeles. In 1989, he played Father Larkin, a priest-principal of a Catholic school, in Stand-up Tragedy at the Mark Taper Forum in Los Angeles. In 1992 he appeared in an episode of Quantum Leap as Fred Trump (alongside his future Enterprise co-star Scott Bakula). In 2008, he had the role of Will Torrey, an American union representative in Ravensridge at the Fremont Centre Theatre in South Pasadena, California.