Breathing Device Marine Corps Staff Sgt. Russel Engelman and Marine Corps Sgt. Tanniel Ashley practice using an emergency breathing device during shallow water egress training at Camp Hansen in Okinawa, Japan, Aug. 10, 2016. Engleman. a cyber security technician, and Ashley, a logistics embarkation specialist, are assigned to the 3rd Marine Expeditionary Brigade. Marine Corps photo by Sgt. Ally Beiswanger SHARE: Download: Full Size (1.98 MB) Tags: Marines, training, Marine Corps Credit: Sgt. Allison Beiswanger VIRIN: 160810-M-WW697-006A.JPG Photo Gallery