Casualties of the September 11 attacks
2,974 victims were confirmed to have died in the initial attacks; this includes Sneha Anne Philip, a doctor, who in 2008 was ruled to have died on 9/11. In 2007, the New York City medical examiner's office began to add people who died of illnesses caused by exposure to dust from the site to the official death toll. The first such victim was a woman, a civil rights lawyer, who had died from a chronic lung condition in February 2002. In September 2009, the office added a man who died in October 2008, and in 2011, a male accountant who had died in December 2010. This raises the number of victims at the World Trade Center site to 2,753, and the overall 9/11 death toll to 2,996.
Emergency workers killed in the September 11 attacks
Several New York City Police Department (NYPD) officers saw Flight 11's impact with the North Tower and immediately reported it to dispatchers. Ten minutes after Flight 11's impact and seven minutes before Flight 175's impact, the NYPD chief of department was en route to the scene and raised the police mobilization to level 4, thereby sending around 22 lieutenants, 100 sergeants, and 800 police officers to the World Trade Center. NYPD personnel were primarily responsible for assisting in evacuations and helping injured civilians.
Three police helicopters were also deployed to report on conditions and assess the feasibility of a rooftop landing or of special rescue operations. Once Flight 175 had struck the South Tower, another level 4 mobilization was ordered, bringing to almost 2,000 the number of NYPD personnel at the scene. Some were ordered to enter the World Trade Center to assist with the FDNY's evacuations.