US: The United Launch Alliance (ULA) has launched its Atlas V rocket on the NROL-39 mission for the Atlas V rocket the National Reconnaissance Office. Liftoff took place from Vandenberg Air Force Base in California. The Atlas V rocket was also carrying the Government Experimental Multi-Satellite payload, or GEMSat, a Naval Postgraduate School CubeSat Launcher (NPSCUL) which will deploy 12 nanosatellites. Like most of the NRO’s satellites, the NROL-39 spacecraft and its mission are classified; however due to the nature of satellite programs it is hard to keep many details secret. NROL-39 is the third satellite in the NRO’s current-generation radar reconnaissance fleet.
Source: NASA spaceflight