Jeffrey S. Feinstein (born January 29, 1945) is a retired career officer of the United States Air Force (USAF). During the Vietnam War, Feinstein was a weapon systems officer, an integral part of two-man aircrews with the emergence of air-to-air missiles as the primary weapons during aerial combat. Flying aboard F-4 Phantom IIs, Feinstein downed five enemy aircraft, thereby becoming a flying ace, the last of five U.S. aviators to become aces during that conflict and to date still the most recent aviator to achieve ace status in the U.S. military.