Delta IV Heavy rocket launches spy satellite for final time from California

The United Launch Alliance Delta IV Heavy rocket launched the NROL-91 mission for the National Reconnaissance Office (NRO) and the Space Force's Space Systems Command (SSC) on Sept. 24, 2022. It was the final launch for the heavy lift rocket from Vandenberg Space Force Base in California. There are two more Delta IV Heavy launches scheduled from Florida before the rocket is retired.

Credit: ULA