[If the bomb were dropped over the Library Tower in downtown LA] Within five miles of ground zero, everyone not killed by the blast and heat would receive a lethal dose of 500 rems of high-energy radiation. Up to 20 miles away from the detonation, the blast wave would gut every building — even concrete and steel reinforced buildings. USC, UCLA, Occidental College, and even Whittier College--home of the Fighting Poets--would all be gone.