October 24, 2000. The Pentagon conducts the first of two training exercises called MASCAL, which simulate a Boeing 757 crashing into the building. Charles Burlingame, an ex-navy F4 pilot who worked in the Pentagon for 17 years, participates in an earlier version of this exercise in 1989 before retiring to take a job at American Airlines where 12 years later his Boeing 757 allegedly crashes into the Pentagon.
July 24, 2001. Larry A Silverstein, who already owned WTC7, signs a $3.2 billion 99 year lease on the entire WTC complex 6 weeks before 911. Included in the lease is a $3.5 billion insurance policy specifically covering acts of terrorism.
September 11, 2001. The National Reconnaissance Office in Chantilly Virginia is preparing for an exercise in which a small corporate jet crashes into their building. NORAD is in the middle of a number of military exercises. But first, Vigilant Guardian is described as an exercise that would pose an imaginary crisis to North American Air defense outposts nationwide. The second, Northern Vigilance moved fighter jets to Canada and Alaska to fight off an imaginary Russian fleet. Three F-16s from Washington D.C.’s National Guard at Andrews Airforce Base 15 miles from the Pentagon are flown 180 nautical miles away for a training mission in North Carolina. This left 14 fighter jets to protect the contiguous United States.