This is a Airport Security check-point with a control tower with it. You start off getting in a neat single file line in between the white bricks. Once your turn the security man checks you. You open the two shutters and put your luggage in the machine that X-rays them. You walk onto the other side and pick up your luggage and board your plane! Very simple right?
The control tower has at least two people working in it at ALL times. They control the WHOLE airport from there basically. The antenna spins around with a heat vent.