PHILIPPINE SEA (March 25, 2021) Personnel Specialist 1st Class Joseph Ferry treats a simulated head injury while Cryptologic Technician (Maintenance) treats a simulated arm injury sustained by Chief Boatswain�s Mate Juan Vigil during a general quarters drill aboard the Arleigh Burke-class guided-missile destroyer USS John S. McCain (DDG 56). John S. McCain is assigned to Task Force 71/Destroyer Squadron (DESRON) 15, the Navy�s largest forward-deployed DESRON and the U.S. 7th Fleet�s principal surface force. (U.S. Navy photo by Mass Communication Specialist 1st Class Jeremy Graham)