Classy Elegant Royal Blue Prom Dresses Sweetheart Navy Blue Appliques A Line Ruffle Long Prom Dress Sparkly Tulle Royal Blue Sweetheart Prom Dresses MP790 Musebridals Vintage 1970s U.S. Air Force Dress Blue Wool Uniform Jacket and Pants Off Shoulder Long Satin Prom Dresses Womens Formal Evening Gowns Did You Know? A Brief History of U.S. Air Force Uniforms When the U.S. Air Force became an independent branch in 1947, it did not immediately have its own uniforms. Airmen