“ On people alive on the 92nd floor and above after the impact, see Commission analysis of conditions on tower floors and advice received by civilians in the towers based on (1) calls to NYPD 911 from or concerning people in the towers on September 11, 2001, and (2) transcripts of recorded calls to the Port Authority police desk from people in the towers on September 11, 2001 (hereafter "Commission analysis of 911/PAPD calls") . Everyone alive on the 91st floor was able to evacuate. ”

“ It is possible that a person who worked above the impact zone had not yet reached his or her office and was killed below the impact zone, either by falling debris, by the fireballs that exploded into the lobby, or by being trapped in an elevator. Individuals below the impact zone may have been killed for the same reasons. Individuals may also have been killed while in the process of evacuating. ”

“ One instance in which the FDNY/NYPD rivalry may have had an impact on the total fatalities was the alleged failure of ESU officers descending past at least two firefighters after 9:59 in the North Tower to share their evacuation instructions. It should be noted, however, that at least one firefighter has conceded that he, too, descended past other stationary firefighters without telling them to evacuate. ”