Chad Kerr, a utility plumber with Alutiq, flushes the fire hydrant near Bldg. 1002. Tinker Fire and Emergency Services recently earned Class 1 distinction for fire suppression from the International Organization for Standardization. Given to fire departments that meet the highest standards on water supply, communications, training, operations and prevention; Tinker's recent certification is the first in the Air Force. Only five other fire departments in the state of Oklahoma possess the same certification. (U.S. Air Force photo by Paul Shirk)