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Department of Defense

Department of Defense

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U.S. Department of Defense

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Defense Secretary James N. Mattis speaks to reporters in the cabin of an aircraft.

This is Your Military

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Special Reports

Operation Atlantic Resolve

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This screen shot shows Defense Secretary Jim Mattis speaking in front of a U.S. flag.

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Face of Defense

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Live Events

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MISSION

The mission of the Department of Defense is to provide a lethal Joint Force to defend the security of our country and sustain American influence abroad.

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