United Launch Alliance preparing for its next Atlas 5

Assembly of a Atlas 5 rocket kicked off Friday morning at Cape Canaveral to stack a powerful version of the vehicle launching next month. Liftoff of the Atlas 5-541 configured rocket is planned for March 25. The exact launch time is withheld for security reasons. The mission will launch the NROL-67 mission for the U.S. National Reconnaissance Office, the secretive government agency responsible for the country's fleet of spy satellites. More

(Source: SpaceFlight Now - Feb 8)