160330-N-TP976-074 NORFOLK (March 30, 2016) An MH-53E Sea Dragon helicopter from the Blackhawks of Helicopter Mine Countermeasures Squadron (HM) 15 conducts an aerial refueling exercise with a Lockheed Martin KC-130 tanker. Navy and Marine Corps aviators regularly conduct training in order to maintain mission readiness. (U.S. Navy photo by Mass Communication Specialist 3rd Class Taylor N. Stinson/Released)