U.S. Air Force Staff Sgt. Hannah Kreun, an occupational safety craftsman assigned to the 97th Air Mobility Wing, uses a tape measurer to find the distance between the wall and the LightStrike Germ-Zapping Robot, April 2, 2020, at Altus Air Force Base, Okla. The robot is capable of cleaning an estimated radius of seven feet in about five-to-ten minutes. (U.S. Air Force photo by Staff Sgt. Cody Dowell)
28.0-300.0 mm f/3.5-5.6
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