This is different from the usual post-WW III films (The Day After, Threads) that were common in the 80s. There's no huge mushroom clouds, no buildings evaporating, or humans disintegrating. Just a blinding flash of light - and the aftermaths of radiation exposure in a smalltown USA, while the people try to hold together in a post-apocalyptic world. This low-budget movie boasts some very bizarre moments (a mother sewing her own daughter's body in sheets), great acting by Jane Alexander, and Kevin Costner when he was still a nobody. Must have been a risky movie to make in those days.