Update--SpaceX launched two satellites from Vandenberg Space Force Base late Thursday morning.

     Liftoff was at 11:36 AM.

     The payload for Maxar 1 were two WorldView Legion satellites that will take the first step to enhance and replace existing satellites that collect pictures and data about the planet's surface.   

     This was the 20th flight for the Falcon 9 first stage booster supporting this mission, including nine Starlink missions.

     After stage separation, the first stage landed back at Vandenberg Space Force Base.