Pretty cool concept. Check out the link for details and the vid is great if you watch it all the way through.
http://www.thefirearmblog.com/blog/2010/04/09/segways-used-for-sniper-target-practice/
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http://www.thefirearmblog.com/blog/2010/04/09/segways-used-for-sniper-target-practice/
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