Many news organizations reported that President Bush ordered plans to be made for temporarily disabling the Global Positioning System during times of national crisis to prevent terrorists from using the technology to precisely target their attacks. Some people are scoffing at this, but they probably did not have friends or relatives killed on 9/11.
If a coordinated attack involving hijacked airliners ever occurred again, I think the president would be well advised to temporarily disable civilian uses of the GPS system. [ via Boing Boing ]