U.S. Marines with Battery F, Battalion Landing Team

U.S. Marines with Battery F, Battalion Landing Team 2nd Battalion, 4th Marines, 31st Marine Expeditionary Unit (MEU), and Combat Logistics Battalion 31, 31st MEU, provide security in a simulated Embassy compound as noncombatant role-players wait to enter the Embassy during a Noncombatant Evacuation Operation as part of Certification Exercise (CERTEX), on Camp Hansen, Okinawa, Japan, March 22, 2014. CERTEX is the culminating event of the MEU's annual Spring Patrol of the Asian-Pacific region. (U.S. Marine Corps Photo by Gunnery Sgt. Ismael Pena/Released)