Photos: Atlas 5 rocket soars from West Coast

SpaceX engineers are readying two Falcon 9 rockets for launches Oct. 7 and Oct. 9 from Florida and California, setting up another quick turnaround to first deploy a large TV broadcasting satellite for SES and EchoStar over the United States with a previously-flown booster, then add 10 more spacecraft to Iridium’s fleet of new-generation voice and data relay network.

SpaceX scrubbed a Falcon 9 launch attempt Thursday to evaluate a “slightly high” pressure reading in the rocket’s upper stage liquid oxygen tank, and officials have rescheduled the company’s final mission of the year for Saturday morning.

United Launch Alliance is preparing an Atlas 5 rocket to boost an undercover satellite into orbit for national security later this month.