United States Marines - USMC-050518-M-2353F-021

050518-M-2353F-021 Cpl Brad Berryman conducts breathing exercises at the Survival Systems' Modular Egress Training Simulator on Camp Hansen, Okinawa, Japan May 18. Berryman is a radio tech with Headquarters and Service Company, 2nd Battalion, 4th Marine Regiment, the battalion landing team for the 31st Marine Expeditionary Unit. (USMC photo by Privat First Class Jeremy W. Ferguson)