Here’s what they do to speed cameras (called GATSOs) in the UK:
http://www.redditmirror.cc/cache/websites/www.speedcam.co.uk_adyvb/www.speedcam.co.uk/gatso2.htm
I particularly like the term “setting them alight!”
Those emails will contain a bunch of stuff on the video they stopped from going public for over a year. Thats what they’re covering up.