The launch was given at 03.26 Saturday.
Booster Delta IV launched from the spaceport at Cape Canaveral with the communications satellite WGS 10 for U.S. forces and allies, a stream of running lead the United Launch Alliance.
Earlier, the launch was postponed due to technical problems with the rocket.
The satellite, designed to provide secure communications for the U.S. military and its allies around the world, built by Boeing.
He will become the tenth in the constellation of Wideband Global SATCOM satellites, which the United States unfold in 2007 to replace the current 60-ies of the last century the system of DSCS (Defense Satellite Communication System).
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