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What’s in my water

Airman 1st Class Donte Arrington, 2nd Aerospace Medical Squadron Bioenvironmental engineer, levels out a vial of water so he can test it for chemicals at Barksdale Air Force Base, La., July 31, 2018. Water on Barksdale needs 5:1 chloride to ammonia ratio to keep the it bacteria free. (U.S. Air Force photo by Senior Airman Stuart Bright)

PHOTO BY: Senior Airman Stuart Bright
VIRIN: 180731-F-DQ193-1101.JPG
FULL SIZE: 1.8 MB
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