Security Expert Says Emergency Response Shouldn't Sideline Public

One year ago, Bostonians woke up to the news that the city had locked down because the second Boston marathon bombing suspect was still on the loose, after an overnight gun battle with police that took place hours after surveillance camera images of the suspects had been released.

Boston and surrounding communities became ghost towns. But it wasn't until the lockdown was lifted that a Watertown resident venturing outside found suspect Dzokhar Tsarnaev hiding in the boat he kept in his backyard.

When should a city shut down for an emergency, and at what price?

National security expert Stephen Flynn says emergency responders too often sideline the public instead of incorporating them into emergency response. He joins Here & Now's Jeremy Hobson to discuss when and when not to enforce shelter-in-place.