Double Impact is a 1991 American action crime film written and directed by Sheldon Lettich, and written, produced and starring Jean-Claude van Damme as Chad and Alex Wagner.  The film marks Van Damme's third collaboration with director Sheldon Lettich from Bloodsport and Lionheart.  I am for sure covering these movies. and second collaboration with Bolo Yeung (the first being Bloodsport in 1988).