NGAD

The USAF has it’s own NGAD Development program which at the time of writing include the F-47 and possible F-22 Super Raptor and F-55 (F-35 Lightning II Twin Engine Upgrade) aircraft.

The US Navy has it’s version of the NGAD program to include the F/A-XX Program.

Both programs will likely use engines from the Next Generation Adaptive Propulsion (NGAP) program for a 35,000–40,000 lbf (156–178 kN) thrust class engine to power the Next Generation Air Dominance crewed fighter aircraft.