White House press secretary Karine Jean-Pierre and White House national security spokesman John Kirby hold a press briefing. This comes after the U.S. military shot down an unidentified object over Lake Huron on Sunday, the fourth object downed in U.S. airspace in eight days. One object was a suspected spy balloon from China that Pentagon officials say was about the size of three school buses. Subscribe: http://smarturl.it/AssociatedPress http://www.apnews.com/ https://www.facebook.com/APNews https://twitter.com/AP http://www.instagram.com/apnews