180915-F-IN231-001
A United Launch Alliance Delta II rocket carrying NASA’s Ice, Cloud and land Elevation Satellite-2 spacecraft lifts off from Space Launch Complex-2 at Vandenberg Air Force Base, Calif., Sept. 15, 2018, at 6:02 a.m. PDT. This marks the final mission of the Delta II rocket, which first launched on Feb. 14, 1989, and launched 155 times including ICESat-2. (U.S. Air Force photo by Michael Peterson)