Beginning flight control final preps
The first stage liquid oxygen tank is now 70% full. Chilled to Minus-298 degrees F, the liquid oxygen will be used with RP-1 kerosene by the RD-180 main engine on the first stage during the initial four-and-a-quarter minutes of flight today. The 25,050 gallons of RP-1 were loaded into the rocket after rollout.
L-48 Minutes: The Flight Termination System of the Atlas V Launcher is now undergoing a pre-flight test
T-15 minutes and counting: Pre-launch checks of the rocket's safety system have been completed.
L-36 Minutes: The first stage RD-180 Main Engine has now initiated its Fuel Fill Sequence
Entered a planned 25-minute hold at T-4 minutes