Falcon 9 launches Tranche 0B and Falcon 9 first stage landing

A SpaceX Falcon 9 rocket launched the second Tranche 0 mission (Tranche 0B) for the Space Development Agency (SDA), from Space Launch Complex 4E (SLC-4E) at Vandenberg Space Force Base in California, on 2 September 2023, at 14:25 UTC (07:25 PDT). Following stage separation, Falcon 9’s first stage landed on Landing Zone 4 (LZ-4) at Vandenberg Space Force Base. Falcon 9’s first stage (B1063) previously supported twelve missions: Sentinel-6 Michael Freilich, DART, Transporter-7, OneWeb 19/Iridium-9 and eight Starlink missions. According to SDA, “Tranche 0 will comprise 28 satellites: 20 in the Transport Layer for communications and data; and eight in the missile warning/tracking Tracking Layer”. Credit: SpaceX