Aerial shot of G.I.’s marching in Nevada Test Site. The troops walk inside trenches. Huge atomic explosion with billowing clouds. Observers with protective glasses are illuminated from the blast. Silhouette of observers with mushroom cloud in air above. G.I.’s walking back through desert in cloud of dust, some have Geiger counters to measure radiation. Aerials hots of test homes that have been destroyed or damaged by blast. Scientists in breathing masks walk around detonation site. Another wide shot of atomic explosion. Slow motion footage of house exploding from blast. Shots of wrecked home and damaged cars. Second house wasn’t damaged as badly, windows blown in. Mannequins in second home.