Petty Officer 3rd Class John Crow, an aviation survival technician at Coast Guard Air Station Elizabeth City, N.C., deployed to Alaska for Arctic Shield 2015, swims toward a Coast Guard Air Station Kodiak MH-60 Jayhawk helicopter during the Coast Guard Research and Development Center’s joint civil and federal search and rescue exercise near Oliktok Point, Alaska, July 14, 2015. As the lead federal agency for maritime search and rescue, the Coast Guard must ensure the marine public is prepared for Arctic operations. (U.S. Coast Guard photo by Petty Officer 2nd Class Grant DeVuyst)