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Active Denial Technology
The military's Active Denial Technology, being tested at Kirtland Air Force Base in New Mexico, uses a millimeter wave beam of energy that's intended to make people feel an intense burning sensation--without causing permanent injury.
Mobile microwave weapon
The millimeter wave technology could go mobile on modified Humvees or other vehicles for use in crowd control. The so-called VMADS (Vehicle Mounted Active Denial System) rigs have been considered for deployment in Iraq.