20 minutes according to eyewitnesses.

And maybe the same people believe in Santa Claus too but I ain't going to believe them. The actual recorded police messages are accurate accounts, not guesses, might be's and may be's. If the Gov (elected by you the public) had not reduced police numbers (like all public servant) there might have a unit closer too.

(PS Warning : Everyone on this forum is going to have to prove they are not overweight or some of us will bar them for posting )