Police radars to detect suicide bombers and gunmen

What will they really be looking for? UK not prone to random gunmen...The odd samurai sword wielder, yes, we do suffer from...but without tempting fate, weve only had two suicide bomber incidents. Thugs with knoves? yes, I'm all for their detection and arrest. Who is trying to sell the police what and why? [well for profit, obviously, stupid] or is it just Keith Vaz getting his name in the papers again?