Video: Atlas/Cygnus pre-launch news conference

NASA is gearing up for an intense few weeks of work aboard the International Space Station, staging three spacewalks, moving a docking port from one module to another to support commercial crew ferry ships and capturing an Orbital ATK Cygnus cargo ship carrying nearly 4 tons of equipment and supplies.

Watch as a Falcon 9 rocket with the first Crew Dragon capsule atop, briefly fired its engines for a crucial pre-launch test on Jan. 24, 2019.

The addition of a U.S. Air Force communications satellite has capped the assembly of a 218-foot-tall United Launch Alliance Delta 4 rocket at Cape Canaveral set for liftoff the evening of March 13.