This just means you don't trade bitcoin in the local subway, or back alley. Trade in the local library, local shopping center police lobby etc. If you aren't doing something illegal there is no need to hide it and you will be comfortable. If the other party wants to do something illegal and you suggest a location like this, well you know to call off the deal and walk away.
Agreed. He is a firefighter for christ-sake. He shouldve done the trade in their headquarters.