After a clerk at an all-night convenience store near Lawrence, Kansas, reported he had just been robbed by a gunman, police searched the area for the culprit. Within minutes, two officers spotted a man running in the darkness between houses in a nearby neighborhood. The cops gave chase. The gunman outran them, but he was shocked to see that other officers were now on his tail from a different direction. He was finally caught. As he was led away, he asked “How did you catch me?” One of the officers pointed to the man’s high-tech tennis shoes -- shoes with heels that blinked on and off every time his feet hit the ground.