A vector rendering of the "Prop and Wings" badge worn by cadets at the US Air Force Academy, Air Force ROTC, and the Air Force Officer Training School (OTS).  It was originally used as the symbol of the US Army Air Service prior to the creation of an independent Air Force.
Own work, derived from w:File:Prop_and_wings.gif and File:United_States_Air_Force_Pilot_Badge.svg
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