9/11 Training Exercise Planned for Simulated Plane Crash Five Minutes before Pentagon Attack Took Place

Five minutes before the Pentagon was hit on September 11, 2001, a training exercise being run by a US intelligence agency just over 20 miles from the Pentagon was set to include the scenario of a small private jet plane crashing into a building. It is unclear whether the scenario was played out, or if the exercise had been called off by that time.