June 6, 1999-Summer 2001: Port Authority and Fire Department Train for a Major Fire at the WTC

Employees of the Port Authority of New York and New Jersey, which owns and operates the World Trade Center, and the New York City Fire Department (FDNY) take part in training exercises that simulate major fires on upper floors of the WTC. [Newsday, 11/12/2001; 9/11 Commission, 11/3/2003; 9/11 Commission, 5/18/2004 ]
On June 6, 1999, members of the Port Authority Police Department (PAPD) and the FDNY participate in an exercise that simulates a five-alarm, full-floor fire on the 92nd floor of the WTC’s South Tower. The exercise, held early on a Sunday morning, makes use of smoke machines, lighting, and mannequins, to create a realistic environment for participants. [9/11 Commission, 5/18/2004 ]
In September 2000, the Port Authority and the FDNY conduct a similar exercise on the empty 93rd floor of one of the Twin Towers (the particular tower is unstated). Like the June 1999 exercise, it is held on a Sunday morning, simulates a five-alarm fire, and uses smoke machines to make it more realistic. Alan Reiss, the director of the Port Authority’s World Trade Department, will later recall: “It was a major full-floor high-rise fire. It was a full-scale fire simulation.” Five FDNY engine companies take part. The exercise is videotaped and elevators are unavailable while it is taking place. [Newsday, 11/12/2001]
At some point in the summer of 2001, the Port Authority and 30 FDNY companies train for a five-alarm fire on the 90th floor of the South Tower. Fire safety directors working for OCS Security, which holds the fire safety contract for the WTC, also take part in the exercise. [9/11 Commission, 11/3/2003]
The PAPD holds “annual tabletop drills involving both police and the civilian management at the World Trade Center,” to exercise the emergency response plans for the WTC, according to Reiss. These drills are developed by PAPD specialists, Reiss will say, and other agencies besides the Port Authority—such as the FDNY—can participate. [9/11 Commission, 5/18/2004 ] However, despite being recommended in 1993 to train for the event of a plane hitting the WTC (see (March 29, 1993)), the Port Authority conducts no exercises simulating that scenario in the subsequent eight years before 9/11. [Newsday, 11/12/2001] Whether the Port Authority held exercises simulating large fires on the upper floors of the WTC before 1999 is unclear.