is the most detailed account that I've found regarding the fire-rescue response at the Pentagon. The following link goes to a page with a downloadable PDF file. I read some of it a long time ago but I don't remember what it may or may not say about Flight 77.

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Arlington County After-Action Report on the Response to the September 11 Terrorist Attack on the Pentagon

This After-Action Report (AAR) describes the activities of Arlington County and the supporting jurisdictions, government agencies, and other organizations in response to the September 11, 2001, terrorist attack on the Pentagon. This incident produced a Unique paradigm of response considerations and requirements. It was a major fire and rescue operation within the broader context of a terrorist attack. This terrorist attack occurred in Arlington County, VA, but at a U.S. military facility under the direct control Of the Secretary of Defense. The incident response engaged a large number of agencies, organizations, and individuals from all levels of government and the private sector, and it lasted for an extended period.

http://www.arlingtonva.us/departments/Fire/edu/about/FireEduAboutAfterRe...

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