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Henry Hartsfield and Ken Mattingly pose in front of the launch pad with Space Shuttle Columbia in the background

STS-4 crew takes break during CDDT for STS-4

Astronauts Thomas K. Mattingly, II., right, and Henry Hartsfield, Jr. pose for news photographers in front of the Space Shuttle vehicle during break in the countdown demonstration test (CDDT) for STS-4.

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