You could see this type of "physical" electronic warfare also employed in Iraq with the US Gov't bombing the center of GSM-blocking signal generators.
GPS. Nor GSM.. but I suppose it woudl work the same way. -- My blog: http://blogs.securiteam.com/?author=6"The third principle of sentient life is the capacity for self-sacrifice --- the conscious ability to override evolution and self-preservation for a cause, a friend, a loved one."
-- Draal, "A Voice in the Wilderness", Babylon 5.