When I was in college I worked weekends at a filling station on the night shift. One night around 11:00PM a Florida Highway patrolman pulled into the station, skidded to a stop and jumped out with his revolver drawn. He asked if I was ok and when I said yes, he walked all around the station, especially the back then came back and told me someone had seen two armed bros around 100yds behind the station. He stayed awhile then left.
Never heard anything else about it.
To those who are giving you a bad time about reporting citizens with guns, not many law-abiding citizens sit in a parking lot with guns out on their laps. If they had a legitimate reason to have them, I'm sure they will be able to explain that to the police.
And congratulations on baby #4. :-)