Perhaps the biggest newly uncovered secret is that on the morning of 9/11, when Al Qaeda struck New York and Washington, the Pentagon's annual "Global Guardian" war game was in full swing. Three dozen real nuclear weapons had been loaded onboard intercontinental bombers in North Dakota, Missouri, and Louisiana.
When Bush left Florida on Air Force One amid fears that terrorists would try take down the presidential plane, he flew right into the middle of the war game.
Secrets of 9/11: New Details of Chaos, Nukes Emerge
by William M. Arkin and Robert Windrem September 11, 2016