In the process of trying to erase his dental records, in order to make people believe he's dead, Wendell Whittaker exposes himself to dozens, if not hundreds of witnesses in a crowded hotel.
Whittaker has a revolver with a silencer. The gap between the cylinder and the barrel makes a silencer ineffective.
It's unlikely that a person could walk up to the front desk of a hotel and the desk clerk reveals a guest's room number. And yet the desk clerk does it twice.