(VOVworld) – People have flocked to New York to mark the 13^th anniversary of the September 11 attack, held at the National September 11 Memorial, the US Department of Defense, and the Shanksville area in the state of Pennsylvania. The names of nearly 3000 victims will be read out loud with the presence of their families and relatives. Security has been tightened at the capital Washington DC where a huge number of police have been deployed around the US Congress while staff are required to bring their car keys in case of emergency evacuation. Soldiers armed with submachine guns are present at metro stations around the US Department of Defense while F16 fighting falcons are ready for any duties from a military airport adjacent to Washington DC ready to prevent any incidents similar to the September 11 disaster. New York City has been put on high alert over the past days.