Gil Birmingham, born July 13, 1953 in San Antonio, Texas, USA, is an actor. He plays Don Simmons in Vegas. He is a guest star in the first season and only appears in the pilot. He has been active since 1986 and has also appeared in Twilight (2008), New Moon (2009), The Twilight Saga: Breaking Dawn - Part 1 (2011), and Rango (2011).