Kristi Yamaguchi still inspires, the Americans who join ISIS, and K-Pop takes center stage in Pyeongchang

The Winter Olympics are officially underway. We'll have details on the opening ceremony in Pyeongchang, South Korea. Then, a conversation with former Olympic figure skating star Kristi Yamaguchi, who won a gold medal for the US at the 1992 Winter Games. And what makes an American Olympic Alpine skier an unusual favorite in a sport that's often dominated by European women.