US Air Force (USAF) AIRMAN First Class (A1C) William Lannon, 100th Security Forces Squadron (SFS), trains his 5.56 mm M4 Carbine as he participates in the recapturing of a KC-135R Stratotanker aircraft as part of an exercise, while on temporary duty (TDY) at RAF (Royal Air Force) Fairford, United Kingdom (UK). The exercise is for the Crisis Response Team (CRT), to train on close quarter combat drills such as airfield security