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Non-Lethal Weapon: DOD Seeks to ­se Lasers to Create Shouting Will-O-the-Wisp


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Laser sound

Credit: U.S. Department of Defense

The Department of Defense's Joint Non-Lethal Weapons Development Program (JNLWD) is closing in on a directed energy weapon that can literally tell people to go away—creating sound waves with laser pulses that can annoy, frighten, or otherwise send the message to people approaching a military unit that getting closer is not a good idea.

From Ars Technica
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