A training exercise is held in New York based around the scenario of a biological warfare agent being released, presumably by terrorists, at a sporting event. During the tabletop exercise, which is attended by top city officials, the police commissioner decides he wants to shut down Manhattan in response to the simulated crisis. Although other exercise participants are skeptical about his decision, they discuss how the shutdown could be achieved. Their discussion leads to an informal understanding between them of how authorities could stop traffic on the city’s bridges and through the city’s tunnels if it was ever necessary to do so. The plan they come up with is that, initially, all traffic would be one-way out of the city and then, subsequently, routes would be closed. This plan will actually be implemented on September 11, 2001, in response to the attacks on the World Trade Center that day. [Jenkins and Edwards-Winslow, 9/2003, pp. 29 ] Today’s exercise is presumably conducted by Mayor Rudy Giuliani’s Office of Emergency Management, which was created in 1996 with the purpose of, among other things, improving New York’s response to major incidents, including terrorist attacks (see 1996). [9/11 Commission, 7/24/2004, pp. 283]