Staff Sgt. James Arnold descends underneath the water in the “Helo Dunker” on Camp Hansen, Okinawa, Japan, August 3, 2017. Marines and Sailors with III Marine Expeditionary Force attended the Underwater Egress Training course to improve their skills in escaping from submerged aircraft. Arnold, a native of Dallas, Texas, is an Electronic Maintenance Technician with Marine Wing Communications Squadron 18, 1st Marine Air Wing, III MEF. ( Marine Corps photo by Lance Cpl. Andrew Neumann)

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Photo credit: © AB Forces News Collection / Alamy / Afripics
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Keywords: aircraft, amphibious, calm, camp, combat, composure, crash, egress, expeditionary, force, group, hansen, iii, infantry, japan, marine, marines, okinawa, operations, panic, pool, readiness, training, underwater