SpaceX prepares to launch classified Space Force radar mission from California

SpaceX is preparing to launch a classified U.S. Space Force mission from Space Launch Complex 4E at Vandenberg Space Force Base in California in November 2026 aboard a Falcon 9 rocket.

The mission, USSF-432, is the sixth in the Space Force’s Space Based Sensing and Targeting program. It carries Starshield-bus satellites with government-provided radar sensors into low Earth orbit. The radar capability, Space-Based Airborne Moving Target Indication, is meant to detect and track aircraft, drones, and cruise missiles from space without depending on airborne radar aircraft.

Space Systems Command awarded SpaceX a $4.16 billion other transaction agreement for Space-Based Airborne Moving Target Indication in May 2026. Col. Ryan Frazier, acting SBST portfolio acquisition executive at Space Systems Command, backed the agreement, saying “This agreement accelerates our ability to field persistent, global airborne moving target indication capability”.

Outlets disagree on when liftoff will occur. Tech Times, publishing Nov. 1, reports SpaceX targets 1:42 a.m. UTC on Tuesday, Nov. 3, within a four-hour window closing at 5:25 a.m. UTC. NexaCurrent, publishing Nov. 2, reports the four-hour window opens at 5:42 p.m. Pacific time on Nov. 2, with a backup beginning at 5:28 p.m. Pacific time on Nov. 3. Space Launch Live reported Oct. 26 a no-earlier-than time of 1:28 a.m. UTC on Nov. 4 after slips from Nov. 2 and Nov. 3. EarthLive24 listed Nov. 1 a window of 01:28–05:28 UTC with status go.

The first-stage booster, B1095, is making its eighth flight. NexaCurrent and Space Launch Schedule report it will land on the Of Course I Still Love You droneship in the Pacific Ocean, while Tech Times reports it may land at Landing Zone 4 at Vandenberg. NexaCurrent says the booster’s earlier flights include GPS III-8 and six Starlink missions, and Space Launch Live states B1095 returns to service 196 days after its previous mission. Falcon 9 Block 5 has flown 644 times with a 99.8% success rate.

Tech Times reports there will be no public webcast for USSF-432, while NexaCurrent reports SpaceX’s website and X account are expected to carry the webcast starting about 10 minutes before liftoff. SpaceX has not disclosed details about the payload or deployment altitude. As of Nov. 2, USSF-432 appeared in November launch calendars as a scheduled mission, not a completed launch.

USSF-432 follows the classified USSF-481 launch from California. Tech Times places USSF-481 on Oct. 15, 2026, while NexaCurrent dates it Oct. 16, 2026. The mission comes within roughly four months of five other SBST launches: USSF-366 in mid-August 2026, USSF-153 in early September, USSF-259 and USSF-385 spanning mid-to-late September, and USSF-481 in October.

Open-source orbital trackers cataloged roughly 239 Starshield-class objects on orbit as of early October 2026. Each Starshield satellite travels at roughly 17,400 mph, meaning processing must account for satellite velocity. A single satellite at roughly 500 km altitude covers perhaps 500 to 1,000 km of ground at a time and revisits a point about once every 90 minutes. The goal is to eliminate 90-minute gaps in coverage, though industry modeling suggests 150 to 300 or more satellites may be needed for continuous global coverage, suggesting an early, potentially periodic-coverage phase.

The SB-AMTI system uses Doppler radar instead of optical pictures, processing radar returns from moving airborne objects against stationary ground clutter. Starshield shares Starlink’s flat-panel form factor and krypton ion thrusters but adds inter-satellite laser links, an encrypted payload interface, and hardened avionics. The laser links let sensors over denied airspace relay targeting data across the satellite chain without a ground station in an adversary’s range, while the encrypted interface lets SpaceX build and fly the satellite without accessing sensor data. The data passes through a classified hardware boundary controlled by the government customer, and avionics are hardened against electromagnetic disturbances such as nuclear electromagnetic pulse.

The Pentagon treated the hardening requirement seriously after assessments of Cold War-era exquisite satellite survivability. The legacy E-3 Sentry AWACS required a crew of 17 to 19 and flew at 35,000 feet with roughly eight hours of endurance on station. Congress stopped further E-3 retirements through fiscal year 2027 while the SBST replacement capability matures, and the E-8 Joint STARS ground-tracking aircraft was retired entirely in 2019. Space Delta 7 activated the 77th Surveillance Squadron at Grand Forks Air Force Base in North Dakota on July 31, 2026; the squadron will handle tasking reception exploitation of data from the growing constellation.

President Trump directed the Golden Dome missile defense initiative in early 2025, and the $4.16 billion other transaction agreement was awarded roughly two months afterward. Space Force officials have not publicly confirmed SBST’s role in Golden Dome, citing classification, though the timing is consistent with an architectural link between the programs. NATO’s DIANA accelerator listed Resilient Space Operations as a 2026 priority challenge, and members of the House Armed Services Committee have requested briefings from Space Systems Command on the SBST acquisition strategy.

An adversary seeking to blind the SBST mesh must target hundreds of satellites simultaneously, straining anti-satellite weapons, whereas destroying an E-3 Sentry requires shooting down one aircraft. SpaceX created Starshield LLC to manage government contracts independently from the commercial Starlink business. Space Launch Schedule describes USSF-432 as possibly a batch of classified low Earth orbit satellites based on Starshield bus, inferred from rocket stage drop zones matching prior Starlink Group 15 launches.