Goof balls... there used to be a magazine called Readers Digest, and they had a section called "Humor In Uniform" and this was the type of thing you'd read about there

https://www.flickr.com/photos/133697406@N05/28201332062/in/photostream/

there is a lot of space after they pull the jet engine out... and these guys with a bit of time on their hands and a photographer to entertain made the best of it

Found on https://www.flickr.com/photos/133697406@N05/