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Photos

Snapshots of what’s happening in the Defense Department.

An Air Force cadet looks through a tube.

Tunnel Trials

Air Force Cadet 2nd Class Eric Hembling uses a Ludwieg tube, a type of wind tunnel, to measure the pressures, temperatures and flow fields of basic geometric and hypersonic research vehicles at the U.S. Air Force Academy in Colorado Springs, Colo., Jan. 31, 2019.

Photo Gallery