(Studio: Dan Rather) Findings in investigation of space shuttle Challenger's explosion, focusing now on solid rocket booster seals, outlined.
(DC: Bob Schieffer) Johnson Space Center mission mgrs.' belief that Challenger exploded due to seal failure examined; details illustrated on screen. [NASA (National Aeronautics and Space Administration) rocket project manager Lawrence MULLOY - acknowledges rocket manufacturer Morton Thiokol recommended launching Challenger in warmer weather; explains NASA (National Aeronautics and Space Administration) decision to proceed with launch.] Morton Thiokol's earlier warning about seals detailed. All previous launch tapes said under scrutiny due to discovery of plumes of flame similar to those seen during Challenger launch just prior to its destruction; scenes shown. Astronauts' newfound concern described.
- Rather, Dan;
- Schieffer, Bob
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