Tinker boiler replacement
A construction worker works in the demolition site of Boiler #1 in Bldg. 3001 on Tinker Air Force Base, Oklahoma. The original boilers were installed around 1942, making them the same age as Tinker itself. By removing these boilers and installing new energy-efficient machines, Tinker is reducing its energy consumption for the future. (U.S. Air Force photo by Kelly White)