Architects & Engineers for 9/11 Truth, Inc. (AE911Truth) is an American non-profit organization promoting the conspiracy theory that the World Trade Center was destroyed in a controlled demolition, disputing accepted conclusions around the September 11 attacks, including The 9/11 Commission Report, as well as FEMA's "WTC Building Performance Study" (2002). Their claims and theories lack support among the relevant professional communities. Activities Richard Gage, a San Francisco Bay Area architect, founded Architects & Engineers for 9/11 Truth in 2006. Gage's website states that he is a member of the American Institute of Architects and that he worked as an architect for 20 years and was involved in the construction of numerous "fireproof" steel-frame buildings. He became convinced of the need to create an organization that brings together architects and engineers after listening to an independent radio station interview with theologian David Ray Griffin. Gage has given speeches at conferences organized by supporters of the 9/11 truth movement in various locations in the United States and Canada, and has presented his multimedia talk "9/11 Blueprint for Truth – The Architecture of Destruction" in 14 countries. His presentations focus on the sequence of events leading to the destruction of the three World Trade Center buildings and include videos of their collapses alongside footage of controlled demolitions. He went on a tour of European countries in 2008 and gave speeches in Australia, New Zealand and Japan in 2009. In 2009, Architects & Engineers for 9/11 Truth had a booth at the annual convention of the American Institute of Architects. AIA media relations director Scott Frank has stated that "We don't have any relationship with his organization whatsoever." The controversial two-hour movie 9/11 Blueprint for Truth, popular among members of the 9/11 Truth movement, is based on a presentation given by Richard Gage in Canada. Gage was also interviewed for an episode of the BBC television program The Conspiracy Files, an episode of the ZDF's series History, based on a co-production of the BBC and the ZDF, as well as for a documentary produced by the Canadian television news magazine The Fifth Estate. The organization is the main constituent of the ReThink911 coalition, which ran an advertising campaign putting up signs and billboards in seven U.S. cities, as well as in Vancouver, Toronto, London, and Sydney in 2013. Gage left Architects & Engineers for 9/11 Truth in September 2021, after being criticised for remarks