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Videos of what’s happening in the Defense Department.

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Undersecretary Discusses Space and an All-Domain Future

  • Sept. 23, 2020 | 41:12

Dr. Mark J. Lewis, acting deputy undersecretary of defense for research and engineering, joins other experts to discuss space during Defense One's “New Orbit: Space and an All-Domain Future” live feed, Sept. 23, 2020.