The Freak Experience of Vic Tandy

When you hear a loud sound, you might instinctively cover your ears or duck down. It occurs not only in humans, but across many mammals. PTSD is sometimes recognized and people due to exaggerated acoustic startle reflex. Vic Tandy had kind of a freaky experience related to this happened to him. He noticed that one of his foil fencing blades was vibrating up and down really fast.