Professor Raffaello D'Andrea demonstrates the amazing capability of drones that can communicate with each other, technology he admits could be open to "abuse" and is "incredibly dangerous." Aviation expert David Cenciotti expects the drones to be used for "hunting terrorists" and other "homeland security" purposes. RELATED: Impressive Video Shows Flying Robots Working Together - www.businessinsider.com/flying-drones-work-as-a-team-2013-3