Tripwire is a 1989 American film directed by James Lemmo.
A band of ruthless international terrorists led by Josef Szabo David Warner hijack a speeding railroad train loaded with a full arsenal of powerful military weaponry capable of threatening world peace. The only hero who can stop the terrorists scheme for world domination is Jack DeForest Terence Knox. During the battle between good and evil the hero DeForest accidentally kills the son of the Szabo. Seeking revenge Szabo locates DeForests family, murders his wife and kidnaps their teenage son thereby turning their fight it into a personal vendetta.
Source: Wikipedia