Demonstration of areas mined, characteristics of mines and types of mines used by a Minesweeping Boat (MSB) underway off the shore of the United States. A mine sweeping boat underway in an ocean. Animation depicts: the areas which are mined including rivers, harbors, channels, coastal waters and ocean areas. Moored mines and bottom mines are used. Moored mines are held at predetermined depth and bottom mines rest on the sea floor. Mine characteristics include contact and influence mines. Moored mines are of either type. All bottom mines are influence types which includes magnetic, acoustic, pressure or combination of these. Demonstration of damage range is shown. The United States flag flutters in wind from the mast of a ship. Modern types of minesweeper includes Ocean Minesweeper (MSO), Coastal Minesweeper (MSC), Harbor Minesweeper (MSB) and craft type used for shallow minesweeping.
Salvaging activities for the U.S. Navy submarine Squalus (SS-192) off the coast of Isles of Shoals near Portsmouth,New Hampshire. Pontoon afloat on surface with cable slings attached. Men work with pontoon alongside U.S. Navy Ship Falcon (ASR-2). Men on top of pontoon. "Flowerpot"cable clamp is lifted from pontoon by crane hook. Men work with "flowerpot" on deck of U.S. Navy Ship Falcon (ASR-2). Officer sits on bitts in the foreground. Men work with cable on top of pontoon. Air hoses stretched over surface seen in the background. Pontoon alongside USS Falcon. Air bubbles come up along lower portion. Air hoses in mass lying on surface. View of the motor launch and crew work. Man stands on the top of mass of hoses on surface. Men work with hoses stretched over surface. View of the rescue site. Air hoses seen on surface.
U.S. Air Force team recovers debris from a Keystone LB-7 bomber aircraft that crashed in Bluefields,Nicaragua. U.S. Air Force Major William A Blackburn and recovery team removes pieces of a United States Army Air Corps Keystone LB-7 bomber aircraft from swamp. They use machetes to clear some of the swamp grass, and probe for pieces of the bomber. They manually retrieve a number of parts and pieces of the airframe, which are seen piled in a small heap.
U.S. Marine Corps during Battle of Tarawa in World War II. Marines of United States 2nd Marine Division advance on a Japanese bunker and use hand grenades and flame throwers. Smoke column rises from explosions. Many dead Japanese dead seen lying on the other side of the bunker. U.S. marine runs with machine gun to set up in a fortified position.
U.S. soldiers in Baguio, Philippine Islands during World War II. An artillery observation post located in ruins of houses on Quezon Hill. Observers use binoculars. A soldier talks over a telephone. Soldiers of U.S. 37th Infantry Division lead three Filipino girls to safety. Trees in the background.
A U.S. Army Captain, instructor at Camp Desert Rock, in Nevada, briefs U.S soldiers about atomic maneuvers. He notes that the first indication of an atomic explosion is the brilliant light created. After that, a fireball will be visible. Animated images accompany his descriptions of changes in the fireball and formation of the characteristic mushroom cloud. Troops being briefed are seated in a large outdoor area at the camp. Using chalk and blackboard, the Captain explains that danger comes from blast, heat, and radiation. Animated images illustrate the effects of atomic blast, as the Captain narrates.
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