Workers remove cooler parts in engine test facility
A worker with the National Boiler Service, Trenton, Ga., cuts pipes in the Arnold Engineering Development Complex (AEDC) Aeropropulsion Systems Test Facility (ASTF) EC1 cooler for removal. Once the pieces are removed, new parts will be installed. The cooler assists in conditioning high temperature exhaust generated from jet engine tests. (Photo by Rick Goodfriend)