WEBVTT

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George Diller/GOES-O Launch Commentator:  
T- 10...

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nine...

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eight...

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seven...

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six...

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five...

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four...

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three...

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two...

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one...

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and liftoff of  the Delta IV rocket with 
GOES-O,

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enhancing quality and reliability of the 
weather satellite for the forecaster.

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Steve Agid/Launch Vehicle Telemetry Manager: 
About 12 seconds into the flight.

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Twenty-six seconds in.

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Solid motor chamber pressures beginning 
to decline.

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Thirty-five seconds in.

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Altitude now three nautical miles, velocity 
1,945 feet per second,

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and downrange about one mile.

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Fifty seconds.

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Passing Mach 1, vehicle now going transonic.

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Now passing one minute into the flight.

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Now hitting max Q, maximum dynamic pressure, 
in the vehicle.

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One minute, 10 seconds in.

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Second-stage systems now coming online.

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Standby for sep....

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burnout.

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Standing by for separation.

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And we have separation.

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Separation of solid motors one and two.