Air Crash Investigations - Fog of War

On 3 April 1996, United States Air Force Flight 21 veers off course and flies into a mountain while attempting to land at Dubrovnik Airport in Croatia in heavy fog, killing all 35 people on board, including the U.S. Commerce Secretary Ron Brown. The non-precision approach procedure the crew needed to follow required the use of two automatic direction finders, but the aircraft was only fitted with one.