The G.I. Executioner  (1985)

Theatrical Release Information:
The G.I. Executioner

In a typical "B"-movie delivery with overtones of more modern sex and violence, this routine story features Tom Keena as Dave Dearborn, who has served his stint as a Marine and also as an undercover journalist working in Saigon and other Asian sites. Now Dave is in charge of a floating restaurant on a junk in Singapore and believes his past is behind him until he is requested to track down a Chinese defector, a nuclear scientist who has been researching antimatter. Dave soon discovers that his ex-girlfriend is now the lover of his chief suspect, a member of a Hong Kong Triad gang. The unsung hero will soon need all of his talents garnered as a Marine, as well as his contacts from his journalism days, to find the scientist and bring him to a safe haven. ~ Eleanor Mannikka, All Movie Guide