ABC World News Tonight on Instagram: "Two rescuers braved rushing waters in Hesperia, California, to reach a German shepherd stuck on a mountainside. After crossing the water and reaching the dog, the waters grew more aggressive – leaving the rescuers stuck on an embankment with the dog. After a couple of hours, San Bernardino County Fire Department crews were able to bring everyone safely back to shore using a secured raft. It remains unclear how the dog ended up on the mountain or how long it