Colorado Springs survival after 1 megaton attack

[Olefin]

Been thinking about one of the big mysteries in the game which is how did Colorado Springs - and more importantly the Air Force Academy and Fort Carson - survive the 1 megaton attack on Cheyenne Mountain - given their proximity if it had been a ground pounder or even an airburst the chances of them making it thru the attack is minimal - yet the canon states that Air Force cadets after the attack survived to form the Cadet Brigade and drew equipment form stocks left over at Fort Carson

Meaning that both the Academy and the Fort had to make it thru the attack and not be irradiated wastelands (i.e. you dont live long using radioactive equipment)

Now the Academy is far enough away that most likely it would have made it - but Fort Carson is definitely going to take one heck of a lot of damage (if not be a complete write off) from a ground pounder that close of that magnitude - and there wont be much left of anything in the south and center of Colorado Springs

The more you look at it there would only be three possible ways that Carson and Colorado Springs are still there

the bomb is a fizzle and you are looking at a detonation that is more like Hiroshima than a 1 megaton bomb - which is bad but leaves both areas intact

the incoming warhead gets taken out by SAM's and salvage detonates so far up that the effect on the ground is minimal but the EMP damage is major - i.e. Cheyenne Mountain gets a lot of equipment fried and goes dark for quite a while

or the attack isnt meant to take out Cheyenne at all - but instead is a classic EMP attack only - meant to take out the electronics of not only it but a large part of Colorado and neighboring areas

Love to hear you opinions

FYI ran multiple scenarios using nukemap using various "fizzle" scenarios - and almost any ground pounder leaves so much radiation that any attempt by the Cadets to get to Carson is going to mean they get pretty bad radiation poisoning for quite some time - even with a small yield

However a huge airburst because the bomb goes off too high either due to faulty fuzing or a SAM hit - i.e. 40,000 feet or higher - still leaves Fort Carson intact - and definitely would generate one hell of an EMP pulse that would probably take Cheyenne's computers and electrical equipment off line for sure