One night at a circus the tent was packed with thousands of people. It was time for the tiger trainer to come out and perform. He bowed to the audience then went inside the cage. A hush drifted over the audience as the door was locked behind him. The trainer skillfully put the tigers through their paces. Suddenly there was a huge pop, followed by a complete blackout of power. For several long minutes the trainer was trapped in the cage with the tigers in to…