All the fill-and-drain valves on the three core boosters will be cycled open and closed to find out whether that solves the problem.
A fill and drain valve on the rocket did not function correctly. Standing by as rocket and spacecraft are safed.
The propellant tanks of the second stage are securing at flight pressure.
T-4 minutes and counting . . . Launch time is 8:26 a.m. EST.
The arms reaching out to the Delta IV Heavy and Orion will retract to the tower at liftoff. The systems that will power the moves have been activated.
All systems are reported ready for launch at 8:26 a.m. EST.
New Launch Time 8:26 a.m. EST.
The weather system over the launch site that is producing the wind gusts that have scrubbed the first two tries this morning is forecast to break in the next 45 minutes to an hour, reports Kathy Winters, weather officer with the 45th Weather Squadron. Our launch window this morning extends to 9:44 a.m. EST.