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Remembering Allan McDonald: He Refused To Approve Challenger Launch, Exposed Cover-Up

03:48

Howard Berkes

March 07, 2021

Allan McDonald in 2016 holds a commemorative poster honoring the seven astronauts killed aboard the space shuttle Challenger. (NPR)

Related:

Your Letters Helped Challenger Shuttle Engineer Shed 30 Years Of Guilt
Challenger Engineer Who Warned Of Shuttle Disaster Dies
Remembering Roger Boisjoly: He Tried To Stop Shuttle Challenger Launch
Challenger: Reporting a Disaster's Cold, Hard Facts

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