> Well, before 9/11 you didn't have to check your firearms. You could carry them on as long as they were in a case.

Do you have a source for that? Because for as long as I can remember they have had to be checked, including in the 90s.

A lot of people wouldn't consider it reasonable to allow people to carry guns around, least of all on a plane.

It turns out that many people have silly -yet strongly held- beliefs. :) shrug

I can see how one might immediately jump to the conclusion that I said people bringing firearms on board an airplane is reasonable. The sentences are so close to one another. I can see how tempting it would be to do that. But just for the sake of argument, let's pretend I did say that. So... How do you feel about armed air marshals?

Absolutely not true. You haven't been able to carry a firearm onto an airplane for, pretty much, forever.

You always could, and still can, check a firearm into luggage on a flight.

Absolutely true. In the 90s, I went to a regional shooting competition with a handful of other high school kids, and we brought firearms onto the plane.

I'm sorry, but you are just wrong. The relevant US code is at https://www.law.cornell.edu/uscode/text/49/46505 -- it's been in place since the 50's. Security screening to detect weapons has been in place since the early 1970's, after a rash of hijackings in the late 60's. You must be mis-remembering.