Vertical view of Space Launch Complex 6 at Vandenberg Air Force Base as the launch table is positioned onto the pad. The Delta IV is the most advanced family of rockets developed by The Boeing Company in partnership with the U.S. Air Force Evolved Expendable Launch Vehicle program to provide Assured Access to Space for U.S. government customers. Delta IV rockets can accommodate single or multiple payloads on the same mission and can launch payloads to polar orbits, Sun-synchronous orbits, geosynchronous and geosynchronous transfer orbits, and low-Earth orbit.