[The KG9 Kid]

I like the painted markings on the 'spaceship', because as you know, super-intelligent aliens that have come across the far reaches of space to our humble little blue planet need to paint lettering on their spaceships for identification purposes.

Yes, that's right. They still communicate with a symbolic alphabet. It's read right to left just like Hebrew and Japanese.

[null and void]

Are you sure it’s not boustrophedon?

[Army Air Corps]

Well, the markings are their buzz codes and registration codes...gotta following the intergalactic FAA regs.