CAMP LEJEUNE, N.C. -- Marines from Battery F, 2nd Battalion, 10th Marines, attached to Battalion Landing Team 2nd Bn., 2nd Marines, 24th Marine Expeditionary Unit, recently completed the Tactical Recovery of Aircraft and Personnel (TRAP) course offered by the Special Operations Training Group.During the course, the Marines, with the aid of CH-53E Super Stallion helicopters from Marine Medium Helicopter Squadron 263, the MEU's Aviation Combat Element (ACE) conducted several missions in preparation for their upcoming deployment to the Mediterranean Sea.The Marines dropped into various landing zones, traveled by foot to their objectives and used many different techniques to locate the downed pilots, including infrared strobe lights, whistles and electronic beacons.