U.S. Sailors prepare an MH-60R Seahawk helicopter assigned to Helicopter Maritime Strike Squadron (HSM) 51 for takeoff in support of exercise Foal Eagle 2014 March 13, 2014, aboard the guided missile destroyer USS Lassen (DDG 82) in the East China Sea. Foal Eagle is a combined U.S.-South Korea field training exercise held annually in South Korea to ensure the operational readiness of air, space and cyberspace operations in the Korean theater of operations.