An F-16 Fighting Falcon aircraft waits to take on fuel. An F-16 Fighting Falcon aircraft from the 120th Fighter Squadron, Colorado Air National Guard waits to take on fuel during a flight over the Southwestern United States on Dec. 1, 2008. The F-16 is en route to Barksdale Air Force Base, La., to take part in Green Flag East, a pre-deployment exercise for Air Combat Command flying units that perform close-air support and precision-guided munitions delivery. SHARE: Download: Full Size (0.03 MB) Credit: VIRIN: 633012-O-YLX12-815.jpg Photo Gallery