Sailors of Helicopter Sea Combat Squadron (HSC) 25, watch as the main rotor of an MH-60S Seahawk helicopter powers up on the Naval Air Facility Atsugi flight line. The powering on of the main rotor is required prior to launch to ensure all propulsion systems are running properly. HSC-25 is one of the many squadrons devoted to ensuring maritime peace and security in the 7th Fleet area of responsibility. (U.S. Navy photo by Mass Communication Specialist 3rd Class Ryan G. Greene/Released)