So excited to report a strong, solid- and yes, rumbling @SpaceX engine test from 5:45:18 - 5:48:57 pm CST!During the last min and 1/2, a cpl times it became subtly softer as though it would soon stop, but this engine pushed on through! -Only wish I knew which it was 🔥✨@elonmusk

— Reagan Beck (@bluemoondance74) February 9, 2019