YF YF-20 Northrop YF-23 YF-75 Lockheed YF-12 Northrop YF-17 Cobra North American YF-93 North American YF-107 Ultra Sabre YF-102 YF-77 YF-73 YF-115 (12803) 1995 YF (12451) 1996 YF Lockheed YF-22 YF-100 (14013) 1993 YF North American F-86D Sabre Convair XF2Y General Dynamics F-16 Fighting Falcon Mikoyan-Gourevitch MiG-21 SC Young Fellows Juventus Republic F-84 Thunderjet