Good evening continuing with Murdering Liberty, Killing Hope,
When Psychopaths Rule the World By Jeff Prager...

..On September 11, 2001, the United States government held a series of military exercises and drills. Operation Northern Vigilance was a NORAD operation, which involved deploying fighter aircraft to the northwestern part of North America, specifically Alaska and Northern Canada. The exercise was one part simulation, one part real world. It was in response to a similar test acted out by Russia on September 11, where long-range bombers were dispatched to Russia’s high north. The exercises were immediately called off after the news of the terrorist attacks and all simulated information was purged from NORADs computer screens. However, the event was a distraction for the US government on 9/11.

Operation Northern Vigilance was not the only US exercise planned for September 11. A series of war games were also acted out, specifically Global Guardian. Global Guardian is an annual, command-level exercise held in the United States. It is an important task, and the purpose of the drill is to test and validate US nuclear command, control and execution procedures. Vigilant Guardian is an exercise that was run in conjunction with Global Guardian. It involved a simulated bomber attack from the former Soviet Union. The drill was conducted in real time, and appeared legitimate in offices and on computers, but without any planes in the air. One of the drills included was a traditional simulated hijacking.

The National Reconnaissance Office drill that was being conducted on September 11, 2001, is the strangest. In the exercise, a simulated small aircraft crashed into one of the towers at the NRO headquarters. No plane was involved in the drill, but to simulate damage from the crash, some stairwells and exits were closed off. A bioterrorism exercise was planned for September 12, 2001. It was named Operation Tripod and included a real life test of the US plan to distribute antibiotics to an entire city population during a bioterrorism attack. These US military drills set the stage for 911 and were an integral part of the event although they’re never mentioned by the media.
https://exploringrealhistory.blogspot.com/2022/06/part-3-murdering-liberty-killing-hope.html