The Delta IV Heavy configuration rocket launch time has been moved again to 7:40 a.m. E.D.T. on Friday, June 29, 2012.
Launch time has been moved to 7:59 a.m. E.D.T. on Friday, June 29, 2012 for Delta IV Heavy configuration rocket.
From the 45th Space Wing: Rocket launch was on hold due to a fill and drain valve indicating it did not close. The valve issue causing the third hold was on one of the Common Booster Cores. The valve that caused the second hold was on the upper stage. The launch team is going to perform some cycling tests on the core boosters fill and drain valves to evaluate their performance.
New target launch time has been set for 9:15 a.m. E.D.T. on Friday, June 29, 2012.
UPDATE: Delta IV Heavy configuration rocket with its National Reconnaissance Office (NROL-15) payload launched at 9:15 am.