It looks like Houston has purchased these units. Apparently someone is thinking.
How about the Congress and/or TSA/DHS picking these up for all of the airports. Geez, at $25k a piece they seem relatively cheap by airport security standards.
http://www.click2houston.com/video/1...x.html?taf=hou and
http://www.kuhf.org/site/News2?JServ...s_iv_ctrl=1902