Water sinks
U.S. Air Force Airman 1st Class Donovohn Brown, 23d Logistics Readiness Squadron fuels distribution operator, drains a sump tank during a checkpoint inspection Jan. 22, 2015, at Moody Air Force Base, Ga. Brown drained the tank to check the fuel for water and sediments. (U.S. Air Force photo by Airman 1st Class Ceaira Tinsley)