ELLSWORTH AIR FORCE BASE, S.D. -- (Left to right) Senior Airmen Erica Plymale and Angelique Hasz, 28th Maintenance Squadron aerospace propulsion journeymen, tighten bolts on a B-1B Lancer engine part, March 11. The theme of the 2010 National Women's History Month is "Writing Women Back Into History," which is honored in the Air Force by remembering such historic dates as: July 8, 1948 - when Esther Blake became the first woman to enlist in the Air Force. (U.S. Air Force photo/Airman 1st Class Joshua J. Seybert)