 With the full support and encouragement of the city of Lawrence,  Kansas, the filmmakers from ABC successfully transformed Lawrence  into a nuclear wasteland for a few weeks, knocking out windows in  storefronts downtown, placing burnt and overturned cars painted with  clouds of black spray throughout the streets, covering the streets  and sidewalks with rubble and bricks, and setting up giant "tent  cities" and shantytowns down on the banks of the Kansas River, where  the teeming homeless set up camp after the attack. Over 2,000  Lawrence residents, including many University of Kansas students,  were used as extras, and were paid $50 to shave their heads bald and  act as if they were dying of radiation sickness. They were asked not  to bathe during the aftermath scenes to add authenticity to the  movie.