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U.S. Air Force Airman 1st Class Christopher Cameron, 23d Aerospace Medicine Squadron bioenvironmental engineer, poses next to the AMDS emblem at Moody Air Force Base, Ga., Aug. 30, 2012. Airmen of the 23d AMDS ensure the safety of the base by testing the air, water and soil. (U.S. Air Force photo by Airman 1st Class Olivia Dominique/Released)
U.S. Air Force Airman 1st Class Andrew Keener, 23d Aerospace Medicine Squadron bioenvironmental engineer, drops phenol red into a water sample at Moody Air Force Base, Ga., Aug. 30, 2012. Phenol red is a red dye used as a pH indicator to show acidity of a water sample. (U.S. Air Force photo by Airman 1st Class Olivia Dominique/Released)
U.S. Air Force Airman 1st Class Andrew Keener, 23d Aerospace Medicine Squadron bioenvironmental engineer, uses a colorimeter while sampling water at Moody Air Force Base, Ga., Aug. 30, 2012. Colorimeters are used to test the pH level and chlorine in water samples. (U.S. Air Force photo by Airman 1st Class Olivia Dominique/Released)
U.S. Air Force Airman 1st Class Andrew Keener, 23d Aerospace Medicine Squadron bioenvironmental engineer, adjusts a gas mask on Capt. Richard Cuddhy, 71st Rescue Squadron HC-130P Combat King navigator, during a fit test at Moody Air Force Base, Ga., Aug. 30, 2012. The 23d AMDS not only does fit tests, but also water samples, noise assessments, air sampling and health risk assessments. (U.S Air Force photo by Airman 1st Class Olivia Dominique/Released)