SpaceX held all 33 engines on Super Heavy on Friday and called it full duration. That’s the Flight 14 booster. Texas, not Florida. SpaceX fired all 33 engines on a Super Heavy at Starbase on Friday, 28 August, and called it a full-duration static fire for Flight 14. The company’s X post that afternoon, the one Mike Wall quoted for Space.com on 29 August, is the primary: “Full duration 33-engine static fire with the Super Heavy booster preparing for Flight 14.” Two videos sat on the post. The pad is in South Texas. The booster is Booster 21.

Super Heavy on the tower at Starbase. Wikimedia Commons (CC BY-SA 2.0).