Unidentified Objects Shot Down in U.S. Airspace: What We Know

P.M. Edition for Feb. 13. Over the weekend, the U.S. shot down a fourth flying object in North American airspace. So what are these mystery objects? And where are they coming from? WSJ national-security editor Daniel Nasaw joins host Annmarie Fertoli to discuss what we know so far.  Learn more about your ad choices. Visit megaphone.fm/adchoices