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A request for proposal (RFP) was issued in July 1986, and two contractor teams, Lockheed, Boeing and General Dynamics, along with Northrop and McDonnell Douglas, were selected on 31 October 1986 to undertake a 50-month demonstration phase, culminating in the flight test of two prototypes, the YF-22 and the YF-23.
Also on display is a Northrop YF-17 Cobra, a lightweight fighter which was the basis for the heavier Boeing (originally McDonnell-Douglas) F/A-18 Hornet currently used by the United States Navy and Marine Corps.