Refueling lifeline of U.S., NATO air ops
A Royal Danish air force F-16 Fighting Falcon receives fuel Dec. 8, 2009 as Chief Master Sgt. Christopher Powell commands the operation. The Danish F-16 was one of 30 performing their semi-annual aerial refueling training. Chief Powell is a 100th Operations Group boom operator. (U.S. Air Force photo/Tech. Sgt. Kevin Wallace)