Though it frequently falls under the radar comparative to SpaceX’s high-profile Boca Chica Starship hub, another even more significant Texas outpost appears to be busier than testing the rocket boosters and engines attached to all SpaceX operations.
Famous for sometimes encouraging half a dozen or more rocket tests on busy times, SpaceX’s McGregor, Texas facilities showed off precisely that sort of jelqing action on Friday, March 19th, flexing the sheer variety and quantity of rocket components accountable to pass through its gates.
…And that was far from the previous engine test discovered today from @SpaceX McGregor- because there were FOUR more tests out of 6:47-8:52pm! A Falcon Heavy center core (6:47pm), Raptor at Horizontal (8:22pm), Merlin at Small Site (8:29pm), and Raptor on Tripod (8:52pm)! 
#spacextests pic.twitter.com/RrbdlXyuGP
— Reagan (@bluemoondance74) March 20, 2021