LACKLAND AIR FORCE BASE, Texas -- Ben Patterson, Dawson Technical, right, prepares to install an energy-saving window barrier handed to him from co-workers Tirin Sneed, left, at the Air Force Intelligence, Surveillance and Reconnaissance Agency headquarters here Sept. 23. The 802nd Civil Engineer Squadron estimates that the installation of radiant barrier window insulators will save $100,000 a year by reducing air conditioning needs. (U.S. Air Force photo by William Belcher)