U.S. Navy Damage Controlman 3rd Class Alex C. McNight, left, assigned to Damage Control Division, Engineering Department aboard the aircraft carrier USS George H.W. Bush (CVN 77), issues a MCU-2/P gas mask to Information Systems Technician 2nd Class Nathan J. Carmicheal, assigned to Strike Fighter Squadron (VFA) 15, in the ship's hangar bay while under way in the Atlantic Ocean Oct. 5, 2010. Bush is currently conducting training at sea.