This is a rare video of the rooftop of WTC 7 as it collapses. This explains the timing given by NIST to the longer collapse sequence. They initiate the clock when the east penthouse gives way... then seconds later the entire structure goes down at free fall speed. Check out the other New & Rare video that I found recently... it shows the South Face before the collapse. Email wtc@nist.gov and ask why they have yet to release the reports on WTC 7. On October 5, 2005 the NIST published 51 reports on the WTC buildings, but they left out almost everything regarding WTC 7. Four reports are still missing and stated as incomplete. These reports are in regard to, "WTC 7 collapse sequence, WTC debris damage from North Tower, Seismic data on 9/11 & the Con-Ed substation beneath WTC 7." Their report names are respectively "NCSTAR1-6E, NCSTAR1-6F, NCSTAR1-6G & NCSTAR1-6H". Email wtc@nist.gov and where are these reports and when will they be available?