The main reason top leadership got leg-swept in 2008 was because they weren't playing nice with the Army and CENTCOM's insatiable desire for RPA orbits, and wouldn't back down on 5th-Gen at a time when we were committing 150,000+ soldiers at a stretch to fight a counter-insurgency against the stone age. They replaced CSAF with a yes-man who would play ball, thus setting the service back a decade while throwing our remaining resources at the Army's insatiable appetite for ISR feeds in exchange for a GWOT participation trophy. There are a lot of separate issues that factor into the black hole we're in right now, with respect to manning, experience, and morale. But if you wanted to pick a single point along the timeline where the wheels came off, it was firing CSAF in 2008 for ignoring illiterate enemies on mopeds in order to focus on a 5th-gen war. The Minot nuke fiasco, while unsat and hugely embarrassing, made for an easy way to sell the firing, but ultimately wasn't the main driver. Hell, the pilot-in-command of the B-52 continued on her HPO track after the deal.