Âé¶¹´«Ã½

Sound defence

By Ian Sample

17 November 2001

WEAPONS that fire high-intensity “sonic bullets” could be used by sky
marshals to incapacitate terrorists who try to hijack passenger aircraft. The US
Department of Defense is assessing the technology following the attacks on 11
September.

Elwood Norris, chairman of American Technologies in San Diego, California,
says the Department of Defense approached him about a device the firm has
patented that produces narrow but high-power beams of sound. Norris says the
device could be used on hijackers to inflict pain and possibly disorientation.
“They wanted to know, could you use this without any destruction to fuselage
walls and windows? And…

Sign up to our weekly newsletter

Receive a weekly dose of discovery in your inbox. We'll also keep you up to date with Âé¶¹´«Ã½ events and special offers.

Sign up

To continue reading, today with our introductory offers

or

Existing subscribers

Sign in to your account
Piano Exit Overlay Banner Mobile Piano Exit Overlay Banner Desktop