U.S. Air Force C-21 pilots, Col. Brad Derrig, the 119th Wing vice commander, and Col. Kent Olson, the 119th Wing commander, make one final pass in C-21 aircraft number 84-0064 during its final flight from the North Dakota Air National Guard base in Fargo, N.D., Aug. 27, 2013. (U.S. Air National Guard photo by Senior Master Sgt. David H. Lipp/Released)