I don't understand hoplophobia, it's an irrational fear after all, but the fact that someone suspects or might even think they saw someone carrying a gun would feel compelled to say something to the powers-that-be, to what end? Are they any more safe? I could make the case that they were less safe.
I must say this was less hostile than my previous trip to HR at my previous job though for the same "suspicion" 
I was going to start a new thread, and someone or I may still, about a story I heard on the radio this morning. I need to find it to read, but the basics are as follows:
A paranoid pansy saw a man carrying a rifle in Walmart;
The paranoid pansy called 911 and reported it;
The police arrived and ordered the man to drop the gun;
The person with the rifle did not comply;
Police shot and killed the man;
The rifle was a BB gun he had picked up from the shelf in the store;
The paranoid pansy is being charged for false report of a crime.