You went further than I would. Don’t ever get closer to an airport than dropping off family, friend or coworkers.....
I can go in with my CHL up to the TSA fleece point but don’t ....done with commercial air if I can help it.
Funny....
Stonewall Jackson presented an interesting situation. Suppose a person in Vermont or Wyoming or Alaska is carrying a concealed weapon inside his/her waistband, goes to an airport and while in the parking area removes the concealed weapon and stores it. They then are selected for the more advanced screening and “bingo” they show positive for gunpowder residue. Not permit needed, so does the TSA understand or do you end up in a “special” area of the airport?