**Launch date is tentative and subject to change** SpaceX Falcon 9 rocket will launch the U.S. Air Force’s first third-generation navigation satellite for the Global Positioning System. Delayed from May 3 and late 2017. Switched from a United Launch Alliance Delta 4 rocket. The third GPS 3-series satellite will now launch on a Delta 4.
**Delayed from September, Oct. 15, Dec. 15**