Based on the gofundme, I think an editor replaced "largest" with "first" > Starsailor's engine was first successfully tested in the summer of 2021. The test be

Based on the gofundme, I think an editor replaced "largest" with "first" > Starsailor's engine was first successfully tested in the summer of 2021. The test became a world-record-setting event: the largest rocket engine developed and fired by civilians. The wording of the last clause is identical other than that word. Even then its a bit of a stretch, I assume by "civilian" they mean something like "non-commercial hobbyist". https://www.gofundme.com/f/starsailor https://www.gofundme.com/f/starsailor