By Adam Estes On a typical day at the National Air and Space Museum (NASM)’s Steven F. Udvar-Hazy Center, thousands of visitors look down from the glass mezzanine of the Mary Baker Engen Restoration Hangar to see specialists putting their centuries of combined experience to work on the restoration and conservation of some of the … Continue reading Smithsonian’s Bf 109 Unveils a Hidden Story of Resistance