Whilst we were setting up remote cameras on the SLC-37B pad we were hustled off due to ‘Phase 2 lightning warnings’ on nearby pads 40 and 41. This meant that not only did we have to get to a safe place, but that the Mobile Service Tower could not roll back from the rocket.
This meant that the countdown for launch could not continue and eventually the inability to roll back the Mobile Service Tower resulted in the countdown exceeding the available launch window. This meant that the launch had to be scrubbed for the day.
The Delta IV carrying GPS IIF-2 is now scheduled for Saturday morning between 2:41am to 3:00am.