At 9:33 AM, Feb 20 1971, instead of broadcasting the usual weekly test signal for the Emergency Broadcast System, W. S. Eberhardt at the National Emergency Warning Center in Cheyenne Mountain accidentally broadcast the tape of a real alert. “I can't imagine how the hell I did it.” It took 45 minutes and several tries before they finally broadcast a cancellation containing the correct codeword. More EBS codewords. [via mefi.]

DARPA never answers my email.

Since I haven't heard back about my request to add an RSS feed to their Grand Challenge discussion forum, I rewrote my bulletin board scraper from a couple years ago to handle the new format and am now publishing a feed that gets updated every half hour.