US Air Force (USAF) STAFF Sergeant (SSGT) Chris Cook, Military Working Dog (MWD) Handler, 100th Security Forces Squadron (SFS), 100th Air Refueling Wing (ARW), Royal Air Force (RAF) Mildenhall, England (ENG), guides Dingo, his German Shepherd, around a KC-135 Stratotanker refueling aircraft searching for illegal contraband during a training exercise conducted on RAF Fairford, ENG. The 100th ARW is at RAF Fairford during a temporary change of station while the runway at RAF Mildenhall is closed for a six-month reconstruction program