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Margin for error 1/8 of an inch in nuclear world

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WASHINGTON (AP) — The margin for error in operating ICBMs can be excruciatingly small — an eighth of an inch, in one case. That tiny gap led to a disturbing incident in October 2010 in which the Air Force lost communication for nearly an hour with an entire squadron of Minuteman 3 missiles. Their 50 missiles represented one-ninth of the entire Minuteman 3 missile fleet. Investigators determined...

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