Air Force Chief of Staff Gen. Norton Schwartz and Lt. Gen. Herbert Carlisle, the Air Force deputy chief of staff for operations, plans and requirements, talk with Senior Master Sgt. Christian Cahalan from the 380th Expeditionary Aircraft Maintenance Squadron during a visit to the 380th Air Expeditionary Wing in Southwest Asia on Nov. 14, 2011. Cahalan is the superintendent for the RQ-4 Global Hawk aircraft maintenance unit. (U.S. Air Force photo/Tech. Sgt. Patrick Mitchell)