On Friday, Sept. 14, 2012 United Launch Alliance (ULA), the LDCM launch vehicle provider, delivered the upper stage of the LDCM Atlas V 401 launch vehicle, called the Centaur, to Vandenberg Air Force Base, California. Previously, on August 27, 2012 the Atlas V booster (Stage 1) was delivered to Vandenberg.

Atlas V 400 series launch vehicle diagram

An Atlas V 400 series launch vehicle diagram showing the relative positions of the booster and Centaur rocket stages. Credit: United Launch Alliance.