Flashing LED lights somehow make the target sick. It's the latest from the Department of Homeland Security - and not to be confused with the Navy's vomit beam.
Editorial note: Whoa! You've found a super-old post here on BuzzFeed, from an earlier era of the site. It doesn't really represent where we are anymore, and may in fact be totally broken, but we're leaving it up as a part of our early history.