Newly painted KC-135 Stratotanker ruddervator weights sit in a cradle to dry as they are prepared for use by the 553rd Commodities Maintenance Squadron at the Oklahoma City Air Logistics Complex, July 25, 2016, Tinker Air Force Base, Okla. The yellow zinc-chromate is used to prevent corrosion on metal surfaces. (U.S. Air Force photo/Greg L. Davis)