Quartz:

Making the connection is the difficult part—a long, vertical line of smoke and then twisting off into a new direction and across the atmosphere.

That’s how you draw letters in the sky with an airplane, and there are only five people on the planet skilled enough to make it their full-time job.

Greg Stinis learned how to pilot one of those planes before he learned how to drive a car. Not surprising for the son of a man who invented a new way to write sentences in the sky, whose plane hangs in a national museum.

I’ve only ever seen skywriting once, when I was a kid, and I distinctly remember being utterly fascinated by it and driving my father nuts with questions.