CAPE CANAVERAL, Florida -- An Atlas V 551 rocket is on hold for launch from Space Launch Complex 41 at the Cape Canaveral Air Force
Station at T-minus 4 minutes. The forty-four minute launch window began at 5:46 p.m. E.S.T.
The Atlas payload is a U.S. Navy communications satellite dubbed MUOS,
an acronym for Mobile User Objective System. It is a next generation
narrow-band tactical satellite communications system which will provide
ten times more communications capability over existing systems.