UPDATE (Monday, Oct. 5 at 6:55 p.m.) - The Space Development Agency's Tranch 1 launch has been delayed. Vandenberg Space Force Base officials say liftoff is now scheduled for 12:54 a.m. on Thursday, October 8 with landing back at Vandenberg about 10 minutes after launch.
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UPDATE (Monday, Oct. 5) - "Falcon 9 had an auto abort just prior to T-0. Vehicle and payload are in good health, and teams are resetting for a launch attempt no earlier than tomorrow, October 6," SpaceX said on X early Monday morning.
The launch has been rescheduled for between 12:59 a.m. and 1:21 a.m. on Tuesday.
If Tuesday's launch is scrubbed, SpaceX says it has a backup opportunity available on Wednesday, Oct. 7 at 1:02 a.m.
@SemperCitiusSDA Falcon 9 had an auto abort just prior to T-0. Vehicle and payload are in good health, and teams are resetting for a launch attempt no earlier than tomorrow, October 6
— SpaceX (@SpaceX) October 5, 2026
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ORIGINAL STORY: SpaceX is preparing to launch a Falcon 9 rocket from Vandenberg Space Force Base early Monday morning.
According to SpaceX, liftoff is scheduled for 1:17 a.m. The rocket is expected to carry the Space Development Agency's fourth Tranche 1 data transport mission.
SpaceX officials say 21 military data transport satellites will be delivered to low Earth orbit, and they will support a network designed for military communications and missile warning capabilities.
The first stage booster is expected to land on Landing Zone 4, meaning people near Vandenberg Space Force Base and surrounding areas may hear a sonic boom.
