Retired Air Force official discusses mysterious objects shot down by U.S. military

The U.S. military shot down mysterious objects three days in a row over Alaska, Canada’s Yukon Territory and Lake Huron. Retired Air Force Brig. Gen. Robert Spalding, former director of strategy for the National Security Council, joined CBS News to discuss the potential threats to U.S. airspace. CBS News Streaming Network is the premier 24/7 anchored streaming news service from CBS News and Stations, available free to everyone with access to the Internet. The CBS News Streaming Network is your destination for breaking news, live events and original reporting locally, nationally and around the globe. Launched in November 2014 as CBSN, the CBS News Streaming Network is available live in 91 countries and on 30 digital platforms and apps, as well as on and Paramount . Subscribe to the CBS News YouTube channel: Watch CBS News: Download the CBS News app: Follow CBS News on Instagram: