The last United Launch Alliance Delta II rocket joined the lineup of historic launch vehicles in the Rocket Garden at the Kennedy Space Center Visitor Complex in Florida, on March 3, 2021. The first segment was placed in its display area. The Delta II rocket was a workhorse for NASA and civilian scientists, the U.S. military, and commercial clients throughout its almost 30 years of service. Since its first launch in 1989, the Delta II has launched 154 successful missions. NASA’s Launch Services Program launched the ICESat-2 spacecraft on the final Delta II launch on Sept. 15, 2018, from Vandenberg Air Force Base in California.