ULA Begins Stacking Its 1st Vulcan Rocket Supporting a National Security Mission

SPACEFLIGHT NOW - A little more than a week after its most recent Atlas 5 rocket launch, United Launch Alliance rolled a Vulcan booster to the Vertical Integration Facility at Cape Canaveral Space Force Station in Florida on Wednesday morning to begin stacking its first post-certification Vulcan rocket.

The operation, referred to by ULA as Launch Vehicle on Stand (LVOS), is the first major milestone towards the launch of the third Vulcan rocket to date. ULA President and CEO Tory Bruno announced the move Wednesday morning on social media.

This is the second time that this particular Vulcan booster was brought to Space Launch Complex 41 in anticipation of a launch campaign. It was previously readied in late October in support of the USSF-106 mission, the planned, first national security flight of a Vulcan rocket.

Note:  The Vulcan's first stage is powered by 2x Blue Origin BE-4 engines.

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