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Video: Missile alert satellite launches atop Atlas 5
The United Launch Alliance Atlas 5 rocket, standing 189 feet tall and and weighing 720,000 pounds, unleashes 860,000 pounds of thrust from its main engine to launch the SBIRS GEO Flight 3 early-warning satellite from Cape Canaveral, Florida.

Photos: Atlas 5 rolled out with SBIRS GEO Flight 3
The United Launch Alliance Atlas 5 rocket was transfered from its assembly building to the pad at Cape Canaveral's Complex 41 today for Thursday's launch of the U.S. military's third SBIRS GEO missile warning satellite.
VideoPhotos: Atlas 5 rocket receives its payload for Jan. 19 launch
The third Space Base Infrared Systems Geosynchronous Earth Orbit, or SBIRS GEO Flight 3, was hoisted atop the Atlas 5 on Jan.12 to complete the pre-flight assembly of the 189-foot-tall rocket for launch.
VideoLive coverage: Atlas 5 countdown and launch journal
A United Launch Alliance Atlas 5 rocket lifted off from Cape Canaveral today at 7:42 p.m. EST (0042 GMT) to deploy the U.S. military's SBIRS GEO Flight 3 observatory, equipped with advanced telescopic infrared vision to spot enemy missile launches, for early warning surveillance.

Timeline: Atlas 5/SBIRS GEO Flight 3 ascent events
This is the launch timeline to be followed by the Atlas 5 rocket’s ascent into orbit from Cape Canaveral with the SBIRS GEO Flight 3 satellite for U.S. military infrared reconnaissance. Launch is scheduled for Thursday at 7:46 p.m. EST (0046 GMT).

Preview: Advanced missile detection satellite for early-warning alerts awaits liftoff
Culminating years of construction and testing, a $1.2 billion satellite designed to spot and track enemy missiles threatening the United States homeland, its deployed military forces abroad or allied nations will ascend to a surveillance post in space Thursday.

Weather forecast now 80 percent ‘go’ for Thursday’s Atlas 5 rocket launch
Meteorologists are anticipating favorable odds of good weather during the countdown to launch an Atlas 5 rocket and U.S. military satellite on Thursday evening from Cape Canaveral.

Atlas 5 and Delta 4 achieve milestones in parallel on the same morning
Critical operations were completed this morning by United Launch Alliance at Cape Canaveral to prepare two rockets for upcoming flights into space.

Fastest ever stacking of Atlas 5 underway for next national security launch
Just two weeks before it flies to space, the core stage of the next Atlas 5 rocket was erected aboard the mobile launcher platform this morning by United Launch Alliance technicians to kick off a streamlined vehicle assembly that will break a record.

Photos: Final batch of EchoStar 19 launch shots
With a 2-to-1 thrust-to-weight ratio, the million-pound United Launch Alliance Atlas 5 rocket unleashed two-million pounds of ground-shaking thrust to power away from its seaside launch complex at 2:13 p.m. EST (1913 GMT) Sunday with the EchoStar 19 satellite.