In 2011, British soldiers were searching a compound in Afghanistan for explosives. Private Andrew Duff, a dog handler, was on patrol with an English springer spaniel named Jack. The dog was trained to sniff out bombs that the enemy might have hidden in the area. As Private Duff was about to take his next step, Jack suddenly stopped and sat down in front of him. It was the dog's way of letting his handler know that a bomb was buried just ahead. Thanks...