At my testing site around 7:35am a guy got up from his seat and went to the front of the room to talk to the proctors, then walked out of the room. As time was getting closer to the start time she said " I really hope he makes it back." So at that point we ask her where he went. She said "he left his calculator at his apartment. He went to go get it and he said he would make it back in time." There was a huge sigh in the room. We only had 50 people in the room we were in and probably half of us had an extra calculator that we would have let him borrow.
Not only did he not make it back in time, he also was not allowed back in the room to get his references until the exam was over that evening.