Michael Howe, right, and his brother Geoff, speak to the media following a demonstration of their SWAT robot, a high-tech police shield that sits atop a miniature, remote-controlled tank-like vehicle, Thursday, April 18, 2013, in Sanford, Maine. (AP Photo/Robert F. Bukaty)

Associated Press
Michael Howe, right, and his brother Geoff, speak to the media following a demonstration of their SWAT robot, a high-tech police shield that sits atop a miniature, remote-controlled tank-like vehicle, Thursday, April 18, 2013, in Sanford, Maine. (AP Photo/Robert F. Bukaty)
Michael Howe, right, and his brother Geoff, speak to the media following a demonstration of their SWAT robot, a high-tech police shield that sits atop a miniature, remote-controlled tank-like vehicle, Thursday, April 18, 2013, in Sanford, Maine. (AP Photo/Robert F. Bukaty)
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