Pavement and construction technicians from the 627th Civil Engineer Squadron work together to reseal cracks on the McChord Field flight line on Joint Base Lewis-McChord, Wash., June 25, 2020. Resealing is done with melted tar funneled into the cracks and left to dry, which prolongs the life of the flight line by preventing erosion. (U.S. Air Force photo by Airman 1st Class Mikayla Heineck)
24.0-70.0 mm f/2.8
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