Lt. Gen. (Dr.) Thomas Travis, AF Surgeon General, greets SrCol Le Tien Hai, Director of the Vietnam Air Defense Air Force Institute of Aerospace Medicine Sept.14, 2012. The visit was the direct result of discussions during airmen to airmen talks in Aug. 2011 in Honolulu, Hawaii and June 2012 in Hanoi, Vietnam. The focus of the visit by the Vietnamese delegation was Aerospace Medicine and Flight Safety, both areas of mutual interest between the Vietnam and United States Air Forces. This was the first delegation of Vietnamese Air Defense Air Force Officers to visit the Pentagon since the Vietnam War. (U.S. Air Force Courtesy photo)