You probably wouldn't station them in the city, too easy to obfuscate avoid if the locations are fixed - something like this will be forthcoming from the Met's

You probably wouldn't station them in the city, too easy to obfuscate avoid if the locations are fixed - something like this will be forthcoming from the Met's Open Source Intelligence Unit fairly soon, I imagine. http://www.strategypage.com/htmw/htecm/articles/20130524.aspx http://www.strategypage.com/htmw/htecm/articles/20130524.asp...