An U.S. Navy MH-60R Seahawk helicopter assigned to Helicopter Sea Combat Squadron (HSC) 6 takes off from the flight deck of the aircraft carrier USS Nimitz (CVN 68) to assume plane guard responsibility during flight operations Oct. 5, 2012, in the Pacific Ocean. Nimitz was under way conducting fleet replacement squadron carrier qualifications. (U.S. Navy photo by Mass Communication Specialist 3rd Class Ryan J. Mayes/Released)