F-22 Raptors 4000 and 4004 Undergoing Final Assembly

F-22 Raptors 4000 and 4004 were assembled at LM Aero – Marietta in December. Both aircraft will join the F-22 test program this year. Raptor 4000 will support ground test activities at Marietta, while Raptor 4004 will join the flight test fleet at Edwards AFB, California, to test and validate the Raptor’s integrated avionics software suite.