Capt. Dan Shaheen, 465th Air Refueling Squadron KC-135 pilot, adjusts his head gear during flight preparations at Eglin Air Force Base, Fla., Nov. 28. The KC-135 unit was at Eglin testing a Large Aircraft Infrared Countermeasures system module. The system is designed to autonomously detect, provide warning and employ countermeasures against shoulder fired Man-portable air defense system missiles. (U.S. Air Force photo/Tech. Sgt. Samantha Mathison)