Joe Clayton, president and CEO of Dish Network, introduces the Sling TV earlier this month at the International Consumer Electronics Show in Las Vegas. Jae C. Hong/AP hide caption

itoggle caption Jae C. Hong/AP

One of many relatives who waited in vain for news of loved ones aboard missing Malaysia Airlines Flight 370. The NTSB hopes to get faster answers by requiring better technology, especially on planes that fly over large bodies of water. Andy Wong/AP hide caption

itoggle caption Andy Wong/AP