Lonnie Johnson is the inventor of the Super Soaker and more, also a former NASA employee.

personal website - http://lonniejohnson.com/.

wikipedia - https://en.wikipedia.org/wiki/Lonnie_Johnson_(inventor)

History Channel, series: The Toys that Built America -
https://www.history.com/shows/the-toys-that-built-america

There are books, documentaries, and online sources of information about Lonnie Johnson.

Related post:
"Whoosh!: Lonnie Johnson's Super-Soaking Stream of Inventions" (2016)
(Book Recommendations: age 6-8, in the Recommended Resources forum)