. . .How could this have happened? I was told by a member of the NYU response team that water flooding over the FDR Drive had taken out not only the backup generator but the backup to the backup generator. The secondary backup device is on a low floor and was disabled by the flooding. The primary backup generator is on the roof but the pump that supplies fuel to that generator is on a lower floor and was flooded. When I arrived, there was still some power left in the backup generator but nobody knew exactly how much. Some lights still worked. I was told that some ventilators still worked but that some were operating on battery power. . .