Airport security

The other day I flew home from Gardermoen Airport to Trondheim where I study. Going through the security checkpoint I had to use three trays. I had my Macbook computer, a backpack and a big, tangly jacket. But why oh why did the security worker have to take my hat and press it into the tray under my jacket? Now the brim is bent and all out of shape.

Have you had any negative experiences with airport security workers treating your stuff carelessly or have you ever lost something or had anything stolen at the security checkpoint at an airport?