Photos: Atlas 5 rocket aims for International Space Station

A Russian Progress resupply and refueling freighter launched Thursday from the Baikonur Cosmodrome in Kazakhstan on top of a Soyuz booster. The cargo craft completed the fastest rendezvous in the history of the International Space Station program with a successful docking less than three-and-a-half hours later.

Three rockets under the existing Block Buy between the Pentagon and United Launch Alliance have been assigned configurations and payloads.

Engineers erected a commercial Antares rocket vertical on its launch pad on Virginia’s Eastern Shore Friday, positioning the 13-story booster for liftoff Sunday night with more than 5,000 pounds of supplies and experiments for the International Space Station.