I must admit, as a helicopter pilot, things above 18,000 feet MSL get a little confusing to me as well. I have not yet learned how to read high altitude weather prog charts, just to name one example, or anything of that nature other than the bare minimums to pass a checkride. It just never comes up in regular every-day helicopter life. When I was a flight instructor teaching airspace, I used to tell my students “Class A” airspace stood for “A as in – Ain’t gonna happen in a helicopter”. There is a reason why there are no pressurized helicopter cabins, LOL.
I do love Jason’s line in the second panel. For a guy who’s often confused (and who can blame him with Chuck teaching him) he often gets witty lines.