The people in the truck were all dressed like workers. Some of them were even wearing city council vests, and looked like officials who had come to help with disaster relief.
Luke was intrigued.
There weren't many people at the subway station. There were only two patrol officers guarding the entrance to bar entry to civilians.
Thanks to Batman's efforts, very few people were injured in the subway station, and with little to do, rescue workers had quickly left.
After Simon threatened them with the "big school surprise," the police force almost immediately started to move, and they scattered to check various schools.
Luke and Tony both realized that Simon was playing another trick.
He said the police couldn't evacuate the students, or he would directly trigger the "big surprise," but he hadn't said that the police weren't allowed to search.
Sure enough, the police started to mobilize everyone, and so did the FBI and Homeland Security.