DARPA's Precision Electronic Warfare: Dropping radio silence on the bad guys. From Popular Science:
On the battlefield, communication is key. So while improving comms between our troops is a vital part of the military's technological mission, the mad scientists over at DARPA are scheming up a new way to deny communication to the enemy in a very precise way. DARPA is seeking proposals for a way to use an array of low-power transmitter nodes in the sky and on the ground to perform "surgical jamming" that will knock out communications signals "on the order of a city block corner" while leaving surrounding areas unaffected.
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