Watch Live! Final launch of Delta IV Heavy with secret US spy satellite

For the last 64 years, United Launch Alliance's (ULA's) heavy-lift rocket has led an impressive career lofting large payloads into space. However, the rocket is scheduled to lift off one last time when it launches from Space Launch Complex-37 at Cape Canaveral Space Force Station in Florida. The company is now targeting April 9 at 12:53 p.m. EDT (1653 GMT) for the landmark launch.



Aboard the Delta Heavy IV rocket for the mission, known as NROL-70, will be a classified payload being launched on behalf of the U.S. National Reconnaissance Office (NRO). The NRO rarely discloses the nature or capabilities of its spy satellites, and this particular mission offers no exception.