Australia's 'Little Ripper' drone has saved a pair of swimmers caught in rough seas in what's thought to be a world-first rescue operation. Lifeguards were busy testing the UAV off Lennox Head as part of New South Wales' $250,000 shark-spotting strategy when the distress call came in. Within 70 seconds the aerial helper had tracked down the stranded duo and dropped them a flotation pod, which they used to safely make their way to shore, according to The Sydney Morning Herald.