Edited sentence: , made the exhibit possible.Efforts of a long-time resident of Tucson, the late Major Richard L.Felman, USAF (Retired), President of the National Committee of American Airmen Rescued by General Mihailovich Inc.In 1997, after 50 years of political coverup, the freedom fighter General Draza Mihailovich and the Serbian people are paid tribute in an American Museum for saving the lives of more than 500 American airmen who were shot down in enemy-occupied Yugoslavia during World War II.The Halyard Mission was the largest rescue of American lives from behind enemy lines in history.The exhibit is now permanently housed in the Pima Air and Space Museum