SpaceX Launches 21 Military Satellites for U.S. Space Force
SpaceX successfully launched another set of satellites for the U.S. military, lifting off from California’s Vandenberg Space Force Base on October 10 at 3:39 a.m. EDT. The mission, which involved a Falcon 9 rocket, carried 21 “data transport” satellites for the Space Development Agency (SDA).
Originally scheduled for October 5, the launch was delayed when SpaceX aborted the countdown in the final minute, with no reasons disclosed. However, the liftoff went smoothly, and the Falcon 9’s first stage landed back at Vandenberg approximately seven minutes after launch. This marked the sixth mission for booster 1103, which previously flew in July 2025.
This launch contributes to the SDA’s Proliferated Warfighter Space Architecture (PWSA), designed to enhance global military communications and tracking capabilities through a network of satellites in low Earth orbit (LEO). Tranche 1 of the PWSA will ultimately comprise 154 operational satellites, including 126 data-transport units and 28 missile-tracking vehicles.
With today’s mission, SpaceX has now delivered 84 of the planned 126 data-transport satellites for this tranche. The SDA plans to deploy new capabilities every two years in what they call “tranches,” continuously enhancing military functionality.
Today’s launch is part of a broader trend, as SpaceX has conducted 111 Falcon 9 flights this year, with most supporting the growing Starlink broadband constellation.
