F-16 SFW: The Fighter Jet The Air Force Walked Away From
DARPA rejected the F-16 SFW, however, in 1981. Instead, DARPA opted for Grumman’s F-5 derivative, the Grumman 712, which was later designated the X-29.
Defense Advanced Research Projects Agency Forward Swept Wing Program Godzilla Minus One World War General Dynamics General Dynamic
Source: nationalinterest.org