Graeber says the launch team is "moving forward" with the countdown after troubleshooting resolved concerns about a hydrogen leak in the tail service mast umbilical. After the leak stabilized, the launch team was able to fully load the core stage with 537,000 gallons of liquid hydrogen.
It's unlikely the launch will occur at the opening of today's two-hour window due to lost time at the start of tanking operations, caused by stormy weather, and then falling further behind schedule with the hydrogen leak troubleshooting.
Graeber said the team will reassess the timetable for launch after the countdown reaches the next planned hold at T-minus 10 minutes.