Episode 4: LATE

 TDRS-A being deployed from Challenger's cargo bay

TDRS-A being deployed from Challenger's cargo bay

 TDRS-K in the spacecraft assembly lab

TDRS-K in the spacecraft assembly lab

 A diagram of 3rd generation TDRS componants

A diagram of 3rd generation TDRS componants

 1st generation TDRS satellite

1st generation TDRS satellite