Water test: Top of the Tower
                Senior Airman Michael Ang, 628th Civil Engineer Squadron water fuels system maintenance craftsman, climbs a water tower to perform a chlorine test July 29, 2013,at Joint Base Charleston – Air Base, S.C. The water tower is used in emergencies such as destruction from hurricanes or heavy storms. The water’s chlorine level was safe for human consumption. (U.S. Air Force photo/ Senior Airman Dennis Sloan)
                
                    
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