My parents had the same problem in the 70s.. a student was seen with a metal box with wires all over. They got the kids out and called the bomb squad. At least

My parents had the same problem in the 70s.. a student was seen with a metal box with wires all over. They got the kids out and called the bomb squad. At least that case was cooler.. IIRC, he was taking over the PA system to play rock music the final day of school.