Video: Delta 4 lifts off

The access arm that will be used by astronauts boarding SpaceX’s Crew Dragon space capsule was installed on the gantry at launch complex 39A on August 20, 2018.

SES announced Thursday it has tapped SpaceX for two additional Falcon 9 rocket launches from Cape Canaveral to deliver more Boeing-built O3b mPower broadband satellites into orbit, adding to a pair of Falcon 9 flights ordered by SES last year to launch the first batch of mPower platforms beginning in late 2021.

The most powerful variants of the Atlas 5 and Delta 4 rockets have been purchased by the Air Force to launch intelligence-gathering spacecraft for the U.S. government, and NASA has bought an Atlas 5 to deploy a critical polar-orbiting weather satellite.