The US Air Force's Lockheed Martin-built GPS 2R-II navigation satellite was launched by Boeing Delta II from Cape Canaveral, Florida on 20 March. The much-delayed Delta II launch of NASA's Gravity Probe B is planned for 17 April from Vandenberg AFB, California. NASA's Messenger Mercury orbiter is to be launched by Delta II-Heavy from Canaveral after 30 July.
Source: Flight International