NASA JPL Tweeted this out yesterday with the caption, "Happy #LaborDay!
We hope that like these JPLers, you find time to unwind from hard work. Here, the early rocketeers of the lab take a rest during their first rocket motor firing in 1936."
Sharp-eyed Adam Gorightly Retweeted this into my timeline -- probably after noticing that the guy on the right is Jack Parsons.
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