TODAY News, May 21: Severe Storms Sweep Across U.S. I Flight Diverted Amid Ebola Fear I Final Goodbye For Colbert's Late Show

Millions are suffering from severe weather and travel delays ahead of Memorial Day weekend. Also, a Detroit bound flight was diverted to Canada, where a passenger was removed over Ebola virus concerns. Plus, the final episode of "The Late Show With Stephen Colbert" airs tonight. And, details on Eli Lilly’s new experimental weight loss drug.