Sgt. Antonio Lowe, left, and Cpl. Jimmy Ryan, right, watch as an MV-22B Osprey flies over the Nightingale team during a mass casualty evacuation drill Feb. 9 held at the Central Training Area, Okinawa, Japan. The Nightingale team, a contingency force of medical personnel trained to respond to mass casualties, participated in the drill to hone their skills. Lowe and Ryan are with the Communications Platoon, Combat Logistics Battalion 31, 31st Marine Expeditionary Unit. (U.S. Marine Corps photo by Lance Cpl. Tyler Ngiraswei/ Released) - Sgt. Antonio Lowe, left, and Cpl. Jimmy Ryan, right, watch as an MV-22B Osprey flies over the Nightingale team during a mass casualty evacuation drill Feb. 9 held at the Central Training Area, Okinawa, Japan. The Nightingale team, a contingency force of medical personnel trained to respond to mass casualties, participated in the drill to hone their skills. Lowe and Ryan are with the Communications Platoon, Combat Logistics Battalion 31, 31st Marine Expeditionary Unit. (U.S. Marine Corps photo by Lance Cpl. Tyler Ngiraswei/ Released)