https://unknownportal.com/videos/watch/f2ab85d2-3fc2-43a2-8b0f-3c209f83a089 Presented by NIST's Dr. William Pitts. Includes information about Cumulus Databases, estimation of impact speed of second plane, observations of fire growth and movement inside the towers, Moiré pattern analysis combined with motion detection by background subtraction on WTC 2 oscillation and pressure wave during impact, modeling of fire migration and upper layer gas temperatures in Fire Dynamics Simulator, developed by NIST. Poor-quality excerpt taken from "Collapse of the World Trade Center" (Discovery Canada) by NIST. Video and audio quality have been slightly improved. File source: 911datasets.org NIST FOIA #09-42 Release 28 1st Lv. Subfolder: 42A0299 - G28D4 2nd Lv. Subfolder: DiscoveryCanada 3rd Lv. Subfolder: fromCD File: WTC_CA_1.mpg File Size: 206.62 MB File Link: http://911datasets.org/index.php/SFile:TBZCUD6QYXGEEPAHGCFEO2JS3O35AT6I Tue, 10 Nov 2026 00:42:16 GMT https://validator.w3.org/feed/docs/rss2.html PeerTube - https://unknownportal.com https://unknownportal.com/lazy-static/avatars/8e1b22ce-9e45-498c-bf3b-05cc77b487a2.gif https://unknownportal.com/videos/watch/f2ab85d2-3fc2-43a2-8b0f-3c209f83a089 All rights reserved, unless otherwise specified in the terms specified at https://unknownportal.com/about and potential licenses granted by each content's rightholder.