The movie has received mammoth publicity in the local media. But Allegheny County Deputy Emergency Management Director Raymond DeMichiei tells a local television station that some folks, no doubt, may be puzzled by some sights and sounds.
That's why DeMichiei is telling residents, "If you hear shots fired or a disturbance or gunfire ... call 911 and report it and we'll figure it out."
Traffic is expected to be affected, too, as some streets will be closed for filming and so crews can put down fake snow for some scenes.
