The 235-foot-tall Delta IV Heavy rocket will send up the top-secret NROL-70 mission for the National Reconnaissance Office (NRO). The liftoff will take place from Space Launch Complex-37 at Cape ...

This will be the Delta IV Heavy’s 16th and final launch. In its near 20-year history, it has performed mostly classified missions for the U.S. government and all 15 missions were considered ...