SpaceX's Falcon 9 rocket will deliver NROL-76 to orbit.
SpaceX is targeting launch of NROL-76 from Complex 39A at NASA's Kennedy Space Center in Florida. A two hour launch window opens on Sunday, April 30, at 7 a.m. EDT (11:00 GMT). A backup launch window opens on Monday, May 1 at the same time.
This marks SpaceX's first dedicated launch in support of the National Reconnaissance Office (NRO) since being certified by U.S. Air Force to fly national security payloads. The NRO has not released details as to the nature of the mission.
Following stage separation, Falcon 9's first stage will attempt to land at Landing Zone 1 at Cape Canaveral Air Force Station, Florida.