Some guy tried to rob a GameStop in East Liberty, PA. Despite exceptionally high security, he managed to get into the store easily enough. It was getting out that was the problem.
See, with all kinds of locks and shutters on the front door, back door and windows, the thief figured he'd break in by crashing through the roof. Which he did! Easy as pie. But then he looked around the store. Front door was locked, he couldn't open it. Back door was locked, he couldn't open it.
He was trapped.
So he dragged a filing cabinet under the hole in the roof, climbed up on it and left the way he came in. Empty-handed. Way to go, genius.