In interviews for the film, Linda Hamilton took the unusual (and honest) step of saying what she really thought about the movie, calling it "mediocre as hell. Okay, it's really bad, really bad." Charlie Sheen even went a step further, stating he "hates this movie".
During the gun test Stephen Lang is targeting a small model from Aliens the movie and Star Wars.
Most of the boat scenes were shot at the marina in Hopewell, VA, southeast of Richmond, right off the James River. They attached large flood lights to the 2- lane bridge over the river and filmed the scene from a houseboat. The director paid to add a second story to the houseboat to get a higher angle for the shots.