F-16 conversion nears completion
SIOUX FALLS, S.D. - The 114th Fighter Wing's F-16 block 40 aircraft sit on the flightline as the sun sets here August 25, 2011. The unit is in the final phase of conversion from their old block 30 F-16's to the newer block 40's. All new aircraft have been recieved with final maintenance issues being addressed to finalize the conversion. (Photo by Master Sgt. Nancy Ausland)(RELEASED)USAF

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Photo by: Master Sgt. Nancy AuslandRELEASEDUSAF |  VIRIN: 110825-F-BZ340-078.JPG