Admiral Balisle and other rescue workers receive word that security authorities ordered a complete evacuation of the Pentagon following the report of another presumed hijacked plane headed for the Pentagon. They ignore the order to evacuate the building and return again and again to help in any
way possible.1

1 Goldberg, A. Papadopoulous, S., et al “Pentagon 9/11” Historical Office, Office of the Secretary of Defense n.d PDF. March 17, 2011 page 60 http://osdhistory.defense.gov/docs/Pentagon%209-11.pdf