I am trying to find some info on Kai modernization for F-15s. Apparently up to 40 planes were planned to receive the Kai standard, but at one point that was lowered to just 10. But all that data is from several years ago. Does anyone know if there have been new developments on that front? In short, how many F-15 Kai are in service now and how many non-Kai F-15s are budgeted/planned for modernization?