Cindy and Jeff Hall rescued Russian Blue Luke from a Tucson shelter, then moved to Nevada. Five years after he slipped out, they got a call out of the blue: Luke — now called Sam — had been found at a gas station in Brinkley, Arkansas, over 2,000 km away. Volunteers with Alone 2 Home transported him home on a 19-hour journey. "This story just can't underestimate the power of a microchip," Cindy said.