Associated Press
U.S. Navy Lockheed LC-130, known as "321", which crashed in 1971 during a resupply mission in Antarctica, is shown at the 309th Aerospace Maintenance and Regeneration Group boneyard, Thursday, May 14, 2015 at Davis-Monthan Air Force Base in Tucson, Ariz. 321 stayed buried in snow up to it's tail fin in Antarctica for 17 years until crews were able to dig it out, repair it and return it to service. (AP Photo/Matt York)

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