https://techcrunch.com/2020/11/05/watch-spacex-launch-a-gps-satellite-for-the-u-s-space-force-live-2/

SpaceX is set to launch the U.S. Space Force’s GPS III Space Vehicle 04 today from Cape Canaveral Air Force Station in Florida. This launch was all set to take off back at the beginning of October, but was scrubbed in the final seconds. Today’s launch window spans 15 minutes, and opens at 6:24 PM EST (3:24 PM PST), with a backup opportunity tomorrow, Friday November 6 at 6:20 PM EST (3:20 PM PST).

The launch today will use a Falcon 9 first-stage that hasn’t flown previously, and SpaceX will be attempting to recover it with a landing on its drone ship ‘Of Course I Still Love You’ in the Atlantic Ocean. Because of the terms of its agreement with the U.S. Space Force’s Space and Missile Systems Center (SMC, which was previously housed under the Air Force), SpaceX has had to use new boosters for all missions that fall under the National Security Space Launch (NSSL) umbrella, including this one.