T-Minus 90 Seconds and Counting
“At the T-Minus one minute mark, the ground launch sequencer will verify that the main shuttle engines are ready to start.”
T-Minus 80 Seconds and Counting
“Liquid hydrogen tanks now reported at flight pressure.”
The data monitors scrolled charts and numbers. The computers spewed out their data, updating it every few seconds as the screens flickered with the changing information.