Coach/runner at the start says they were making loud speaker announcements 'this is just a drill' with sniffing dogs and active police sweeps. Says the police presence was much more active than he had seen at previous world-level marathons.
Did anyone else hear and notice this?
Who knew what, what did they know, when did they know it and what actions were taken?
I've seen enough to know it's time to fold up the pic nic blanket when they start saying 'don't panic, this is just a drill.'