A UPS cargo plane has crashed and exploded at Louisville airport, killing at least nine people. The U.S. National Transportation Safety Board is leading the investigation. CBC speaks to CNN’s Leigh Waldman for more on the crash. »»» Subscribe to CBC News to watch more videos: http://bit.ly/1RreYWS For breaking news, video, audio and in-depth coverage: https://www.cbc.ca/news Follow CBC News on TikTok: https://www.tiktok.com/@cbcnews Subscribe to CBC News on Snapchat: https://bit.ly/3leaWsr