A government - mandated shutdown of an airport or air traffic control system due to a Natural Disaster. (itravelinsured.com)
Since there's no precedent for national drone traffic control systems, it's hard to say what the concerns with a private solution would be. (cnbc.com)
Or take aviation, where we're making a huge technological leap forward and transitioning from a radar - based air traffic control system to a satellite - based one. (transportation.gov)