You don't know that. Shit has happened with the cs tests before. I don't know where your base of knowledge is coming from, but I've worked two of these details, and picked up tests at 1 ashburn for the last test. They are vacuumed sealed and put in boxes with tape. But people put them in those packages, anything can happen. The proctors are hired help. Usually teachers who read instructions and administer the test. That's it. They advertise for them in the paper. There's usually 1 or 2 people from CS in the building to receive the tests, but they are not in every room.