As new submitter kulnor writes, "Hexagon, a cold war secret project around spy satellites to monitor USSR was declassified last September." kulnor excerpts from the AP story as carried by Yahoo, outlining how more than 1,000 people in and around Danbury, CT kept mum about the nature of their employment: "'For more than a decade they toiled in the strange, boxy-looking building on the hill above the municipal airport, the building with no windows (except in the cafeteria), the building filled with secrets. They wore protective white jumpsuits, and had to walk through air-shower chambers before entering the sanitized 'cleanroom' where the equipment was stored. They spoke in code.' As more and more WWII and cold war secrets are declassified, we learn about amazing technological feats involving hundreds of people working in secrecy. I wonder what will emerge in a few decades around modern IT, the Internet, hacks, and the like." Every time I visit Oak Ridge, TN, I am amazed by the same phenomenon of successful large-scale secrecy.