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Photos

Snapshots of what’s happening in the Defense Department.

The face of a person wearing protective glasses is seen through windows in a large metal tube.

Tube Peephole

Air Force Cadet 2nd Class Eric Hembling uses a Ludwieg tube to measure the pressures, temperatures and flow field of various basic geometric and hypersonic research vehicles at Mach 6 at the Air Force Academy's aeronautics department in Colorado Springs, Colo., Jan. 31, 2019.

  • Download: Full Size (3.13 MB)
  • Credit: Joshua Armstrong, Air Force VIRIN: 190131-F-NH566-0004C.JPG
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