Noah Shachtman writes in Wired’s Danger Room:
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In the early years of the Iraq war, the U.S. military developed a technology so secret that soldiers would refuse to acknowledge its existence, and reporters mentioning the gear were promptly escorted out of the country. That equipment – a radio-frequency jammer – was upgraded several times, and eventually robbed the Iraq insurgency of its most potent weapon, the remote-controlled bomb. But the dark veil surrounding the jammers remained largely intact, even after the Pentagon bought more than 50,000 units at a cost of over $17 billion.
Recently, however, I received an unusual offer from ITT, the defense contractor which made the vast majority of those 50,000 jammers. Company executives were ready to discuss the jammer – its evolution, and its capabilities. They were finally able to retell the largely-hidden battles for the electromagnetic spectrum that raged, invisibly, as the insurgencies carried on.