190914-M-GW555-1046 PACIFIC OCEAN (Sept. 14, 2019) Boatswain's Mate 1st Class Joseph Cox, assigned to the amphibious dock landing ship USS Comstock (LSD 45), directs a Marine Corps UH-60 Blackhawk helicopter while sailing in the Pacific Ocean, Sept. 14, 2019. Approximately 3,000 U.S. Navy and Marine Corps personnel participated in Arctic Expeditionary Capabilities Exercise 2019, a joint training exercise that tested expeditionary logistical capabilities in the Arctic region and prepared joint forces to respond to crises across the Indo-Pacific. (U.S. Marine Corps Photo by Pfc. Andrew Skiver/Released)