Delta II Lofts Missile Defense Satellite

A NASA-supervised mission carrying a satellite with a prototype sensor technology for the U.S. Missile Defense Agency (MDA) was put into a low-Earth polar orbit Tuesday one hour after liftoff by a United Launch Alliance Delta II from Vandenberg Air Force Base, Calif. The $400 million Space Tracking and Surveillance System Advanced Technology Risk Reduction (SSTS-ATRR) mission, originally called the Block 2010 space Risk Reduction, was launched at 1:24 p.m. PDT and achieved orbit at 2:22 p.m. from a two-stage Delta II 7920-10L. More

(Source: Aviation Week - May 6)