Operation Ivy: Three shots of hydrogen bomb explosions. Two shots of American newspapers with headlines referring to hydrogen bombs. MS of hands explaining by means of designs, the principle of hydrogen fusion. Two shots of sun. Classic shot of solar flares and prominences as seen through telescope. AERIAL SHOT of Washington, Capitol. Shot of atomic explosion. Interior shots of US Government office, Eisenhower entering with Lewis L Strauss, chairman of the Atomic Energy Commission (USA), speaking to newsmen taking notes. Shot of Strauss speaking to camera. Cut away to AEC camera in action. Low level AERIAL SHOTs of test site - a chain of small islands.Various ground shots of structures, soldiers. Interior shots of control bunkers, instruments, scientists. Shots of US warship, of sailors aboard ship. ZOOM IN on test island. Shot of beginning of explosion. Shots of shock wave travelling over water towards camera. Several shots of mushroom cloud. Shipboard view of officers, of helicopter taking off. AERIAL SHOTs of island after test. Shot of explosion at late stage.