This morning's planned launch of a Falcon 9 rocket from Vandenberg SFB, Calif. has been rescheduled for Sunday (March 8) between 3:58 and 7:58 Pacific Time. For countdown status and video feeds of the launch, go to: https://spaceflightnow.com https://www.spacex.com/launches/sl-17-18 X @SpaceX This information is subject to change.