A team of police line up behind a pair of hand-held bulletproof shields, showing the relative lack of protection compared to a SWAT robot, right, during a demonstration for the media in

 

              A team of police line up behind a pair of hand-held bulletproof shields, showing the relative lack of protection compared to a SWAT robot, right, during a demonstration for the media in
A team of police line up behind a pair of hand-held bulletproof shields, showing the relative lack of protection compared to a SWAT robot, right, during a demonstration for the media in Sanford, Maine on Thursday, April 18, 2013. Michael and Geoff Howe say their "SWAT robot" keeps SWAT teams and other first responders safe in standoffs and while confronting armed suspects. (AP Photo/Robert F. Bukaty)