The experiment started with a formal arrest by police on a quiet Sunday morning. It reminds me of live scenes seen in many American TV or movies. The 'suspects' or college students were picked up under a series of procedures and carried off to the police station. After a complete identification was made, there were taken into a holding cell where they could wonder what he had done to get themselves into this mess.
We have always seen police searching for potential weapons from suspects who are spread-eagled against the wall.