Probably because the only real way to know you can fly with real nukes is to fly with real nukes. Anyone who has done integration testing with mocked stuff know

Probably because the only real way to know you can fly with real nukes is to fly with real nukes. Anyone who has done integration testing with mocked stuff knows you never have a perfect analog. Imagine if the practice nukes armed with an “ARM” command, but the real ones expect “ARM\n”… that kinda stuff.