The strait-laced Angels transformation into a bullet-spitting supercop is foreshadowed by the sign foe Heston Services when Angel is driving Dannys car to the service station this is a reference to known gun-nut Charlton Heston and symbolises his transformation from staunch pacifist to walking armory. The spray paint he picks up in the services as part of his tooling-up strategy are labelled Zito Colour, a homage to Joseph Zito, the director of 1985s Chuck Norris preposterousness vehicle Invasion USA.