The Arctic is vital to the strategic defense of the United States, which is why there are three USAF bases in Alaska.

Episode two of "Unsolved Histories," find out exactly what a search would entail, and what finding the DC-7C might reveal ...

In Episode 2 of "Unsolved Histories," called "The Wreckage," Feliks Banel examines how and why the DC-7C airliner disappeared ...

Pilots of the Alaska plane aborted their Sept. 12 takeoff at Nashville International Airport, applying the brakes so hard that the tires deflated as they are designed to do when they get too hot.