Training Exercises on 9/11 I find this one the most telling. Not only because of the similarities in the events of that day and there simulation, but also the nature of their work. NRO was kept secret for almost 30 years, and even today many people have never heard of it. 9:00 a.m. September 11, 2001: 9/11-Style Simulation Set to Commence at Agency near Pentagon John Fulton. [Source: NLESI] A training exercise is scheduled to begin at a US intelligence agency located just over 20 miles from the Pentagon, based around the scenario of a small corporate jet plane experiencing a mechanical failure and crashing into a tower building there. The exercise, which has been planned for several months, is to take place at the headquarters of the National Reconnaissance Office (NRO) in Chantilly, Virginia, four miles away from Washington Dulles International Airport and 24 miles from the Pentagon. [ ASSOCIATED PRESS, 8/21/2002 ; UNITED PRESS INTERNATIONAL, 8/22/2002 ]