What Happened to Eastern Airlines Flight 980?

On New Year's Day in 1985, Eastern Air Lines Flight 980 was carrying 29 passengers and a hell of a lot of contraband when it crashed into the side of a 21,112-foot mountain in Bolivia. For decades conspiracy theories abounded as the wreckage remained inaccessible, the bodies unrecovered, the black box missing. Then two friends from Boston organized an expedition that would blow the case wide open.