 The operation involved the hypothetical ground burst of a nuclear device at the New Jersey-side entrance to the Lincoln Tunnel, resulting in "hundreds of thousands" of killed and injured persons and 4.5 million refugees from the initial blast and subsequent fallout.Due to the location of the simulated attack, the operation scenario assumed the disablement or destruction of FEMA's Region II Regional Response Coordination Center which required transfer of command functions to the Region V Regional Response Coordination Center.In the final phases of the exercise, a hypothetical "massive influx" of refugees from the attack "overwhelmed" the resources of neighboring states.