Every Year, On Armed Forces Day, Americans Honor Their Military Services. This Open House Scene, At Edwards Air Force Base, California, Is One Of Numerous Events That Take Place Annually, Usually Near Mid-May, At Air Force Bases And Other Military Installations Worldwide. Air Force Contributions To A Typical Open House Include Displays Of Aircraft And Equipment, Exhibits, Parades, And Fly-Bys (Flying By A Given Surface Location, Usually At Low Altitude). Some Bases Draw Crowds Of 50,000 To 100,000 Each Year.