COMMENTARY:
The morning of Sept. 11, 2001, I was in my office at the Pentagon on the "E Ring," next to the second corridor facing the south parking lot. Terrorist-hijacked American Airlines Flight 77 slammed into the building around the southwest corner from the third corridor - it sounded and felt like the dull thud of a large bomb, the building shuddered and I grabbed my desk.
Complete article:
http://www.washingtontimes.com/news/2008/sep/11/when-flight-77-struck/print/