Think about what you're doing here. You're blaming Nancy and Mitch because the NG wasn't there to protect the Capitol from a bunch of Trump-crazed MAGA thugs. That's only the "biggest question" to MAGAs. For the rest of us, it's the MAGA thugs who stormed the Capitol, injuring scores of LEOs who were there doing their job.
And then there is Miller, Acting SecDef, who in the clearest terms assumed command of the DCNG, and straight jacketed them. He works for Trump, was appointed by Trump. If you want to blame anyone, that's the man in charge, through his boss, Trump. You've seen the memo. You have to know by now that Miller didn't approve using the DCNG until after 4pm on January 6, after the riots had been going on for hours.
So, yeah, tell me all about why we don't know why the NG wasn't there. The answer is Trump and his minions, but you move the goal posts to "Nancy" like a good little MAGA soldier. It's sickening.