To mark the 15th anniversary of the 9/11 attacks, the collective 9/11 Truth movement gathered in New York City for two days of street actions, outreach, and the "Justice In Focus" 9/11 Symposium. At the symposium, organized by the Architects & Engineers for 9/11 Truth, the Lawyers Committee for 9/11 Inquiry, and other co-sponsors, there was a heavy emphasis on the possibility of a civil or criminal trial as a means of exposing the truth about the 9/11 attacks.
Many 9/11 researchers now focus on the mysterious collapse of building 7. A number of 9/11 family members point to the collapse of WTC7 as a possible crack in the official story that could spark a new national conversation on the events of that day. WTC7 was not hit by a plane that day; however, it collapsed at 5:20 p.m. according to the National Institute of Standards and Technology (NIST), the official cause for the collapse was office fires. A growing number of family members, activists, architects and engineers question the official theory for collapse and are seeking a new investigation into WTC7.