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Dr. Mark Esper at U.S. Army Yuma Proving Ground
U.S. Army Yuma Proving Ground
Nov. 29, 2018 | 10:34
Then-Secretary of the Army Dr. Mark Esper and YPG Commander Col. Ross Poppenberger speak with the media about Army modernization efforts at U.S. Army Yuma Proving Ground on November 29, 2018.
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