200522-N-CL550-0167 PHILIPPINE SEA (May 22, 2020) Afloat Training Group Western Pacific evaluators Chief Sonar Technician (Surface) Chad Gepfrey, from Anna, Ohio, top left, and Chief Sonar Technician (Surface) Roy Maxwell, from Houston, top right, observe Sonar Technician (Surface) 3rd Class Kenneth Montgomery, from Mesa, Ariz., center, during an undersea warfare exercise in the sonar control room aboard the Arleigh Burke-class guided-missile destroyer USS John S. McCain (DDG 56). John S. McCain is underway conducting operations in the Indo-Pacific region while assigned to 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 2nd Class Taylor DiMartino/Released)