i am at work and had heard news clips on the radio. i've just looked into the stories on http://news.bbc.co.uk/ and http://www.sky.com/skynews/ and from what i can gather, the grenade was found on a man flying from venezuela into the uk as he tried to get through customs. what if that plane had been bound from the u.s.? most of the other men were arrested around the airports or from random security checks.