A shallow water egress trainer observes as a Marine goes upside down and attempts to breath compressed air from an emergency breathing system at the base pool on Marine Corps Base Hawaii, June 18, 2014. SWET is introductory training that prepares Marines to evacuate an aircraft in the event of an over-water mishap. (U.S. Marine Corps photo by Cpl. Matthew Callahan/Released)
Cpl. Matthew Callahan
<a rel="nofollow" class="external free" href="https://www.dvidshub.net/image/1410458">https://www.dvidshub.net/image/1410458</a>