Update, 3:25 p.m.: The Delta IV Heavy rocket launched from Vandenberg Space Force Base. Update, 3:20 p.m.: The mission director gave the final go for launch after all parties had check in with “go” ...

ULA's Delta IV Heavy rocket will carry a secretive satellite for the U.S. National Reconnaissance Office. "We are proud to launch this critical payload in support of our nation's national security ...

The much-delayed Delta IV Heavy rocket launch has a new date, the United Launch Alliance tweeted Tuesday morning. The rocket is now set to launch from Vandenberg on Saturday, Jan. 19, at 11:05 a.m., ...