STS-41-B (STS-11) with Narration

(Note on mission numbering: this would have been STS-11 (STS-10 was cancelled) but a new mission numbering scheme was adopted -- first digit is fiscal year offset (4=1984), second digit is launch site (1=KSC), letter represents launch order (B=2nd launch). This numbering scheme ended with the destruction of Challenger.)