If the fighter is flying in straight and level flight, at full MIL at 40,000 feet, if I am understanding correctly, this is what would happen at these six points on the above MIL curve:

DOT #1: the fighter will be decelerating

DOT #2: the fighter will not be decelerating or accelerating -- the fighter will just be stuck at this airspeed

DOT #3: the fighter will be accelerating but very, very slowly

DOT #4: the fighter will now be accelerating faster

DOT #5: the fighter will be accelerating but very, very slowly

DOT #6: the fighter will not be decelerating or accelerating -- the fighter will just be stuck at this airspeed

Thanks,

Delta2014