the military has a switch that changes the codes, they can do it in mins from what i understand. the problem with this they also have a lot of civy equipment being used. i would not put money against the fact that they can do local black outs. the problem is local black outs can shut down half the world.Sounds like an article to "let people know that there might be blackouts" as they test certain systems to see if they work properly. One of those being encrypted GPS or something..
After reading some more information about the state of the US GPS I have realized that the timing of this report does have to do with the Europeans getting into the GPS business. When ever a government agency needs additional money they will manipulate public sentiment by declaring the sky is falling, and in this case they may be right. It seems that without any real competition since its inception the US has not properly appropriated money and resources to upgrade and develop the technology to its full potential. Now that the Europeans are posing a competitive threat with the Galileo global positioning system which is said to have better technology, better accuracy, and new satellites, the US GPS will be playing catch up. We certainly don't want to be playing second fiddle with technology we invented. A good part of our national security and economy is reliant on GPS technology now.