Footage of a hydrogen bomb test in the Marshall Islands. MS of a small transport boat pulling up the side of a large naval vessel. CU hands unlocking from a lever and pushing it. MS two men in a control room talking. Lots of analog equipment all around them. CU nautical meters and dials. CU alarm speakers. MS sailors at a ships railing all watching the test. MS sailors with headphones working at a control station. LS hydrogen bomb blast. LS wave on the ocean caused by the explosion. LS sailors watching the test. LS mushroom cloud.