Aviation industry on high alert as near misses increase.

Transportation Secretary Pete Buttigieg has called for a review of the "root causes" of an "uptick" in aviation incidents, including a series of near collisions on runways across the US. The FAA is investigating the incidents, which range from overstressed pilots and flight attendants to better air traffic control technology. The agency is looking for "ways to address areas where the existing safety system could be tightened," including finding new technology to help alert air traffic controllers when airplanes and other vehicles are on a collision course on runways and taxiways.