Tung Thanh Tran (also known as Tom Tran) is an American actor of Vietnamese descent. He is best known for his supporting role of Tuan in the 1987 film Good Morning, Vietnam, starring Robin Williams and Forest Whitaker.Tran was going to school and working part-time as a janitor at Lane Technical College Prep High School ("Lane Tech"), when he was discovered by Touchstone Pictures for the part.Tung starred in 'Good Morning Vietnam' playing the part of Tuan, a member of the Viet Cong who becomes best friends with Robin Williams character, Adrian Cronauer.