On June 23, 2004, a Boeing Delta II rocket successfully deployed to space a replacement satellite for the U.S. Air Forces Global Positioning System (GPS). The launch of GPS IIR-12 aboard a three-stage Delta II launch vehicle occurred from Space Launch Complex 17B, Cape Canaveral Air Force Station, Florida, at 6:54 p.m. EDT. Following a 26-minute flight, the spacecraft was injected to a transfer orbit from a descending deployment flight profile. Once operational, GPS IIR-12 will support U.S. military missions and provide a wide variety of civilian directional guidance services.