 Three years ago, 24-year-old geologist Daniel Robinson disappeared in the Arizona desert. His father, David Robinson II, suspects foul play in the case. And he's now running for Congress. We'll take a closer look at that story. That's coming up a little bit later here on Morning Edition at this hour. As a matter of fact, you can keep up with the latest news from around the world, the country, and the region anytime, anywhere with our mobile app. It's a free download from the App Store or Google Play.