Booster 4 is getting frosty again.
— Chris Bergin - NSF (@NASASpaceflight) December 22, 2021
The Super Heavy is enjoying some cooling liquid nitrogen. Not its favorite beverage of choice (LOX/CH4), but these tests pave the way for using that during upcoming Static Fire tests.https://t.co/APLl78W8fn pic.twitter.com/5dgbIA3bpI