A US Navy (USN) SEAL Team Member armed with a 5.56mm M4 carbine equipped with the Knights Armament Company (KAC) Modular Weapon System (MWS), secure a downed US Air Force (USAF) pilot for extraction during the rescue training exercise DESERT RESCUE XI. The exercise is the premiere Search And Rescue (SAR) training exercise involving all branches of the US Military and is conducted at the ranges at Fallon Naval Air Station (NAS), Nevada (NV)