More stupid security from our government. From an AP story:
President Bush has ordered plans for temporarily disabling the U.S. network of global positioning satellites during a national crisis to prevent terrorists from using the navigational technology, the White House said Wednesday.
During a national crisis, GPS technology will help the good guys far more than it will help the bad guys. Disabling the system will almost certainly do much more harm than good.
This reminds me of comments after the Madrid bombings that we should develop ways to shut down the cell phone network after a terrorist attack. (The Madrid bombs were detonated using cell phones, although not by calling cell phones attached to the bombs.) After a terrorist attack, cell phones are critical to both rescue workers and survivors.
All technology has good and bad uses — automobiles, telephones, cryptography, etc. For the most part, you have to accept the bad uses if you want the good uses. This is okay, because the good guys far outnumber the bad guys, and the good uses far outnumber the bad ones.