Underwater Exit A Marine swims out of a training device meant to simulate a submerged aircraft during training at Marine Corps Base Camp Pendleton, Calif., Oct. 22, 2019. The training, which teaches troops to calmly and safely evacuate from submerged aircraft, is a requirement for any Marines flying in aircraft over water. SHARE: Download: Full Size (1.43 MB) Tags: marine corps Credit: Marine Corps Lance Cpl. Andrew Cortez VIRIN: 191022-M-DB029-1389Y.JPG Photo Gallery