The Washington Post reports 12 episodes were recorded Sunday of small drones interfering with airplanes or coming too close to airports, including other incidents in New Mexico, Texas, Illinois, Florida and North Carolina, according to previously undisclosed reports filed with the Federal Aviation Administration. Before last year, close encounters with rogue drones were unheard of. But as a result of a sales boom, small, largely unregulated remote-control aircraft are clogging U.S. airspace, snarling air traffic and giving the FAA fits. Pilots have reported a surge in close calls with drones: nearly 700 incidents so far this year, according to FAA statistics, about triple the number recorded for all of 2014. The agency has acknowledged growing concern about the problem and its inability to do much to tame it.