Adversaries like Iran are still a generation behind in technology and triple that in pilot training and talent.I also noticed here on FR that a new stealthy F15 is being developed for foreign sales. It might be something for DoD to investigate. Nothing short of a UFO approaches the Raptor, but , even if produced in numbers USAF wants,it still fall far short of current fighter strength. I have also read in Ralph Peters columns that service availabilty of the current Raptor groups is below 60%.If true that is not a good indicator of combat readiness.