After a string of shark attacks, here's how officers at one New York beach use drones to keep swimmers safe

Warmer and cleaner waters off the coast of Long Island, New York, in recent years have brought growing numbers of bait fish to the area — and with them, the bigger fish that eat them, including sharks. In some ways, it's a good sign for the environment. But it's a different story for swimmers, surfers and beach goers.