Some people just don't understand that sometimes when you travel you have to take calculated risk.
Here is an example, say you are visiting St. Louis and you take a handgun with you.
Because you are there on business you have no choice but to enter buildings that don't allow handguns, even with enhanced carry.
Therefore you have to make a decision of what to do with that gun.
Do you violate federal law and your employment and take the gun in the building?
Do you leave it in the vehicle, especially in a city that is as bad as Bassbob says?
Or do you leave it in a safe at the hotel?
Sometimes you do what you believe to be the least risk given the circumstances at that moment. Other than the first choice, Monday morning QB'ing someone's decision of what to do with that gun is obtuse at best.