7/3/2012 - Airman 1st Class Peyton Oesterreich, 49th Aerospace Medicine Squadron bioenvironmental engineer apprentice, mixes a water sample from the Domenici Fitness and Sports Center pool at Holloman Air Force Base, N.M., June 27. The water in the test tube changes colors when test chemicals react to chemicals in the water sample. Oesterreich tests the base pools to ensure they have safe hydrogen and chlorine levels. (U.S. Air Force photo by Airman Leah Ferrante/Released)

7/3/2012 - Airman 1st Class Peyton Oesterreich, 49th Aerospace Medicine Squadron bioenvironmental engineer apprentice, collects a water sample at the Domenici Fitness and Sports Center pool at Holloman Air Force Base, N.M., June 27. Oeserreich collected a water sample to test the base pool’s hydrogen and chlorine levels. In addition to performing water analysis bioenvironmental engineers also ensure safety of the base and respond to crashes and flight emergencies. (U.S. Air Force photo by Airman Leah Ferrante/Released)

7/3/2012 - Airman 1st Class Peyton Oesterreich, 49th Aerospace Medicine Squadron bioenvironmental engineer apprentice, opens his hach kit at the Domenici Fitness and Sports Center pool at Holloman Air Force Base, N.M., June 27. The hach kit is used to test water quality and give a proper water analysis to ensure the base pools have safe hydrogen and chlorine levels. In addition to performing water analysis, bioenvironmental engineers also ensure safety of the base and respond to crashes and flight emergencies. (U.S. Air Force photo by Airman Leah Ferrante/Released)

7/3/2012 - Airman 1st Class Peyton Oesterreich, 49th Aerospace Medicine Squadron bioenvironmental engineer apprentice, prepares a DR/850 colorimeter at the Domenici Fitness and Sports Center pool at Holloman Air Force Base, N.M., June 27. The DR/850 is used to test the chemical levels to determine the water’s quality, by using two filters that use wavelengths to detect the levels in water samples. Oeserreich was testing the base pools to ensure they have safe hydrogen and chlorine levels. (U.S. Air Force photo by Airman Leah Ferrante/Released)