'Yellow Bird'
With the Ford Model A engine warmed up and propellers were spinning behind him, Don Gum was ready to taxi the Wright "B" Flyer "Yellow Bird" on the parade grounds at Fort Sam Houston, Texas, Feb. 27, 2010. Volunteers from the Wright "B" Flyer Inc. assembled two Flyers in San Antonio for the Centennial of Military Aviation event held March 2. (U.S. Air Force photo/Lance Cheung)