There are many conspiracy theories that attribute the planning and execution of the September 11 attacks against the United States to parties other than, or in addition to, al-Qaeda , [1] including that there was advance knowledge of the attacks among high-level government officials. Government investigations and independent reviews have rejected these theories. The most prominent conspiracy theory is that the collapse of the Twin Towers and 7 World Trade Center were the result of controlled demolitions rather than structural failure due to impact and fire. Possible motives claimed by conspiracy theorists for such actions include justifying the invasions of Afghanistan and Iraq even though the U. Since the attacks, a variety of conspiracy theories have been put forward in Web sites, books, and films.

Later, in the late afternoon, President Bush ceremonially placed a wreath at the site, placing beside a plaque reading, "Every life taken here, every act of valor performed here the nation holds in honored memory. The president and first lady Laura Bush then walked slowly along the edge of the crowd, speaking with relatives of victims, firemen and others who had gathered in memory of those lost when the twin towers were destroyed. Bush shook hands and paused here and there to share a few words or give a hug spending almost 2 hours at the site. Afterward, he was remained in New York City to deliver a televised address to the nation from Ellis Island, with the Statue of Liberty as a backdrop.

Subscriber Account active since. Bush was visiting an elementary school and reading to the children when the second plane hit the World Trade Center in New York City. The school turned into a makeshift command center and the president addressed the nation from the building before boarding Air Force One to get to a secure location. World globe An icon of the world globe, indicating different international options.