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Air Sac , air sac Separation , sep·a·ra·tion / ˌsepəˈrāshən/ • n. 1. the action or state of moving or being moved apart: the damage that might arise from the separation of parents… Air Bag , Background
An air bag is an inflatable cushion designed to protect automobile occupants from serious injury in the case of a collision. The air bag i… United States Air Operations , World War II, U.S. Air Operations in: The Air War in Europe. U.S. air operations in the Mediterranean and Europe evolved into two distinct fields of… Vocalization , Many animals communicate with acoustic signals. Crickets rub a hind leg along a row of protruding spikes; rattlesnakes shake a set of beads in their… BROWNING, ORVILLE HICKMAN , Air Force, U.S. OverviewPredecessors of, 1907–46Since 1947
Air Force, U.S.: Overview The U.S. Air Force, the world's most powerful air arm, was not a…
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