Answer: countdown

AnswerCrossword Clue
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12-31 recitation

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Canaveral arithmetic.

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Canaveral procedure.

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Missile launching procedure.
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10, 9, 8, etc.
COUNTDOWNPrelude at Kennedy.
COUNTDOWNPre-launch routine.
COUNTDOWNNASA arithmetic
COUNTDOWNActivity preceding liftoff
COUNTDOWN"The Final ..."