Not a single aircraft or tank was used by either side during the American civil war.
I looked it up. It’s true!
I’d like to see the white paper on this.
A submarine is just a plane that doesn’t believe in itself.
Going 30k feet underwater is way way harder than going 30k feet above the ground. I’d say it’s the planes that are doing the easy job.
More lunatics in the company than workers in the asylum.