Museum Expansion
DAYTON, Ohio -- Iron workers prepare to weld together steel used for the roof truss at the museum’s fourth building on Jan. 15, 2015, in Dayton, Ohio. The 224,000 square foot building, which is scheduled to open to the public in 2016, is being privately financed by the Air Force Museum Foundation, a non-profit organization chartered to assist in the development and expansion of the museum's facilities. (U.S. Air Force photo)