"The Wideband Global SATCOM 4 spacecraft, better known as WGS 4, rode a United Launch Alliance Delta 4 rocket away from the Florida spaceport's pad 37B at 7:38 p.m. EST (0038 GMT) on a 40-minute ascent to supersynchronous orbit.
Liftoff occurred at the opening minute of a launch window set months in advance.
Valued at $464 million, the 6.5-ton satellite will enhance military communications over a turbulent portion of the globe when it commences broadcasting duties in a few months."