The area had over 50,000 employees and 70,000 visitors per day; the work of emergency personnel including the Port Authority Police, the New York City Police Department, the New York City Fire Department, New York City EMS, New York State Court Officers, Federal Agents and many others helped to lower the deaths from the attack. The Port Authority Police had the biggest loss of police personnel at a single time in American history: 37 police officers along with one police dog were killed on September 11th.