Meteorologists predict a 90% chance of favorable weather for the #DeltaIVHeavy launch of #NROL91 at 2:53pmPDT (5:53pmEDT; 2153UTC) on Sat. from Vandenberg Space Force Base, CA. Live blog begins at 5:15amPDT and webcast starts 20 minutes before liftoff: bit.ly/div_nrol91
Attention West Coast! Wonder when you will see the #DeltaIVHeavy near you? Our visibility graphic shows when the rocket will rise into view during the launch of #NROL91.
Leadership from ULA, @NatReconOfc and @SpaceForceDOD completed the Launch Readiness Review for the #DeltaIVHeavy #NROL91 mission giving a unanimous “GO" for tomorrow's launch at 2:53pmPDT (5:53pmEDT; 2153UTC). Weather is 90% favorable.Launch blog: bit.ly/div_nrol91
When the NROL-91 is launched for good, the US Space Force could potentially issue badges to ULA officials and employees featuring a lightning bolt and a hammer, given that the classic Delta SLVs were derived from the Thor ballistic missile (itself named for the Norse god of thunder).
Just your average 10M pound building rolling back from a 30 story tall rocket. No big deal… #DeltaIVHeavy #NROL91 #ToryTimelapse @NatReconOfc
The final west coast launch of the Delta IV Heavy is upon us. The rocket is prepped and ready for its NROL-91 mission tomorrow, 9/24, with window opening at 2:53 pm PDT. @NASASpaceflight
I’m at Vandenberg SFB’s legendary SLC-6 for remote camera setup - maybe for the last time. The final west coast Delta IV Heavy is slated to launch tomorrow on the NROL-91 mission. @NASASpaceflight
Space Launch Complex 6, Vandenberg SFB. #NROL91 @NASASpaceflight
Good morning from Vandenberg Space Force Base in California where our live #DeltaIVHeavy blog has started and will take you all the way to the 2:53pmPDT (5:53pmEDT; 2153 UTC) launch time! The live launch webcast begins 20 minutes before liftoff: bit.ly/div_NROL91
The 9.5-hour countdown is starting at Vandenberg Space Force Base in California for #DeltaIVHeavy to launch #NROL91 at 2:53pmPDT (5:53pmEDT; 2153 UTC). This is ULA's 153rd mission, our 96th for U.S. national security and 32nd for the NRO. Follow along: bit.ly/div_NROL91
#DeltaIVHeavy is powering up for launch and preps are underway at Space Launch Complex-6 for retraction of the Mobile Service Tower. The forecast for the 2:53pmPDT (5:53pmEDT; 2153 UTC) launch continues to indicate a 90% chance of acceptable weather. bit.ly/div_nrol91