ken marsh and the police federation.uld be armed —— whether please should be armed —— whether the police should be armed, and of course some of them are armed, but ordinary police who are not armed and now questions will be asked. people have gone up two policemen and spoke to them, maybe more then they ordinarily would. this is when we recognise just what they do. with me now is raffaello pantucci, director of international security studies at the royal united services institute. khalid masood is slightly older than the normal profile, 52, he has not been imprisoned since 2003 and that might explain why he has dropped off the radar. we are understanding now only about his history and that will be key to his radicalisation. his profile as an older individual is an interesting one and it breaks from the norm that we usually expect, usually we see younger men, the reactive, who are participating, but thatis reactive, who are participating, but that is not completely unusual —— who are active. we saw a prisoner from one tow