You guys need to stop being so dramatic. Flying with a rifle couldn’t be easier. If they ask for the keys give it to them, if not don’t worry. You have to put a declaration form
In the case anyways so no need to lock it before you actually check in.
In Anchorage, the tsa place is right next to the Alaska airlines counter. Just let them look and give them the locks.
Only time I’ve ever needed to re adjust my scope was because of altitude, not somebody messing with my scope.
Also, as far as I know the tsa has quite a long list of “approved” locks. And pretty much anything made by master that is a key only lock works. I like the brass ones.