How big are the odds of someone planning a terrorist attack being so obvious about it ?


Silly story from the Netherlands :

a person walked around for several hours in a white robe (can't recall the proper name at the moment) with an(obivously) fake bomb-belt around his waist and a sign saying "sex bomb" around his neck. He did this on "lowlands" the biggest music event in the Netherlands.

After a while security alerted the police, which started a massive manhunt. The security alert was raised and security checks at the countries largest airport were increased. It turned out to be a stunt from a promotion agency.
I haven't found a link in English yet .