Many government buildings, including some structures at the Air Force Academy and Buckley Air Force Base, already have been outfitted with a similar product, said Dave McFadyen, president of Littleton's American Window Tinting Services Inc.
McFadyen's company is among the firms bidding for the DIA contract.
The Sept. 11, 2001, terrorist attacks accelerated the installation of protective window film at military bases, government buildings and public facilities, including airports.
"The first places to get this stuff were embassies around the world and federal buildings in Washington, D.C.," McFadyen said. The technology is "trickling into the commercial sector."