U.S. Marine Corps Lance Cpl. Donovan Massieperez, a reproduction specialist with Headquarters Battalion, 3rd Marine Division, exits the training helicopter body during Underwater Egress Training (UET), at Camp Hansen, Okinawa, Japan, on March 14, 2019.
UET teaches Marines how to evacuate an aircraft crash-landing in a body of water. (U.S. Marine Corps photo by Lance Cpl. Christine Phelps) Original public domain image from Flickr