"....smiling face at the post office......"
I don't want to call you an out and out liar, but are you sure it was a smiling face? At the post office?

Perhaps they just learned that they had been accepted by the TSA for a new position at the airport and they would be leaving the post office.
I think, per capita, there are more killings at US post offices than at US airports. I may be wrong.

God, I crack myself up! <img src="images/graemlins/smile.gif" alt="" />