Special effects technician Michael Colvin was accidentally killed on the stage of the second unit visual effects shoot when he fell through a trap door while testing it.
Originally titled "Urban Commando", and intended for Danny DeVito as Charlie Wilcox and Arnold Schwarzenegger as Shep Ramsey. When these two opted to make Twins - Zwillinge (1988), the script was bought by New Line Cinema as the follow-up to their "highly successful" Hulk Hogan film, Hulk Hogan - Der Hammer (1989).
The P.K.E. meter prop from Ghostbusters (1984) was re-used in this film as a homing device.
The little girl whose cat gets stuck in a tree is played by Elisabeth Moss in one of her earliest acting roles.
Gun props from Masters of the Universe (1987) were re-used for this film.
Louan Gideon: Played the role of corrupt chemical plant CEO Danielle Atron from Was ist los mit Alex Mack? (1994), as the unnamed businesswoman seen trying to get her cash back out of the vending machine, seen briefly while Shep Ramsey is walking down the street.