A midair mystery

The US shoots down more unidentified objects flying over North America, but right now, Washington knows about as much as you do. Plus: The Republican House speaker convenes what he calls the heads of the five families of the Republican caucus, looking to forge a consensus and prove Democrats wrong. And: Sniffer dogs and thermal cameras find signs of life in both Turkey and Syria, but for every miracle, there is mourning.    To learn more about how CNN protects listener privacy, visit cnn.com/privacy Learn more about your ad choices. Visit podcastchoices.com/adchoices