Oh god - I knew this would be here - I could even predict most of the posts. He broke a rule, they suspected him, they took action.
He was going to rush them? i think not, they had guns (unlike 9/11 apparently). They couldn't have been law enforcement, one had his cap on backwards.
Oh, so they should wear a big sign? Get real.
This may not be the best reaction, but it is a reaction. In the UK it's okay, you just can't fly over central London. And that will prevent what exactly? Send in the fighters? Over Central London. Terrific idea