A pump is partially submerged and non-functioanl in the scenario provided to Staff Sgt. Jaimee Scott (left), 436th Aeromedical Squadron and Tech Sgt. Justin Alexander, 436th Civil Engineer Squadron, (wearing bright green hazardous material protection suits) as they who work to contain a simulated chemical spill at Dover Air Force Base, Del., Oct. 3, 2013. The airmen are participating in a joint unit training exercise between the 436th Medical Group and 436th Civil Engineer Squadron which tests the base's ability to respond to a natural disaster and resulting contamination to water supplies. (U.S. Air Force photo/Greg L. Davis)