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George Diller/NASA Launch Commentator: T-minus
10, 9, 8, 7, 6, 5, 4, 3, 2, 1, main engine

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start . . . ignition . . . and liftoff of
the Atlas V with MAVEN, looking for clues

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about the evolution of Mars through its atmosphere.

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(thundering roar of the ascending rocket)
(inaudible background)

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Xxxxx/ Atlas V Ascent Commentator: (Inaudible)
. . . Mark.

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Everything looking good.

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Still at 100 percent rated thrust on the RD
180.

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Vehicle rates are looking good.

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We do have roll program in, right as expected.

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We're actively controlling mix to ratio.

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Valve position looks good.

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Thrust regulator valve position looks good
Speeds are good.

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And vehicle is operating as expected.

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Down the center of the range track.

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Everything is looking good.

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We're now 1.6 nautical miles altitude . . . point
1 miles down range, traveling at over 1,000

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miles per hour.

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And we've ended our roll programs.

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Everything is looking good.

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Continuing at 100 percent thrust.

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And we are now passing through the sound barrier.

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MAVEN is now supersonic.

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RD 180 continues to operate at 100 percent
rated thrust.

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We are about to pass through Max-Q.

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And MAVEN is passing through Max-Q, rates
look good.

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(Inaudible) Operate at 100 percent and we
have throttled down to 95 percent, thrust

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right on time.