Atomic test explosion for afar. Slow motion footage of planes disintegrating from the blast. B-50 bomber plane on guarded airstrip. Wheel of plane and open bomb doors. Atom bomb is raised into position as engineer stands by watching. Screen is partially blacked out for security reasons. Bomber in flight with shots of pilot, navigator and bombardier. Aerial shot of target on the ground below. Bomb doors opening on plane. Aerial shot of atom bomb exploding. Civil defense test site with mock house set up on corner of Main St. & Elm St. A mannequin family is set up in living room. Army man places woman mannequin in bed and pulls covers over. Mannequins crowded in bomb shelter. Another test home stands a mile away with more mannequins. Cars on the street with mannequins.