VANDENBERG SPACE FORCE BASE, Calif. (AP) — A classified satellite for the U.S. National Reconnaissance Office has launched into orbit aboard a United Launch Alliance Delta 4 Heavy rocket. The NROL-91 spy satellite lifted off at 3:25 p.m. Saturday from the Vandenberg Space Force Base in California’s Santa Barbara County. It was the last launch of a Delta 4 from the West Coast. Additional launches are planned from Florida before the Deltas are replaced by ULA’s next-generation Vulcan Centaur rockets. The Delta IV Heavy configuration first launched in December 2004. This was the 387th flight of a Delta rocket since 1960 and the 95th and final launch from Vandenberg.