150218-N-ZE250-037 CARIBBEAN SEA - -Quartermaster Seaman Steven Lopez and Boatswains Mate Nickey Barnes practice vertical replenishment with an SH-60 Seahawk helicopter assigned to Helicopter Maritime Strike Squadron 46 on the flight deck of Arleigh-Burke Class Guided Missile Destroyer USS Jason Dunham while on deployment. USS Jason Dunham is currently underway supporting Operation Martillo, a joint operation with the U.S. Coast Guard and partner nations, within the 4th Fleet area of responsibility.