
Los Alamos National Laboratory
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The W78 Lives On
Joint Test Assembly flight tests evaluate the health of the Minuteman III and its aging warhead.
December 1, 2016

An unarmed Minuteman III ICBM is launched from Vandenberg Air Force Base in California. (Photo: U.S. Air Force)
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- Managing Editor
- Clay Dillingham
The key to a JTA is that it uses a mock nuclear warhead: surrogate materials have replaced all of the nuclear materials inside.