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[i]Our plan was for the pilot to report to the blockhouse crew primarily prior to T-2 minutes on hard wire circuits, and to shift control to the Center by use of radio frequencies at T-2 minutes. (The symbol T refers to lift-off time.) This shift worked smoothly and continuity of information to the pilot was good.[/i]
[i]As the blockhouse capsule communicator [Slayton] called ignition, I felt the launch vehicle start to vibrate and could hear the engines start. Just seconds after this, the elapsed time clock started and the Mercury Control Center capcom [Shepard] confirmed liftoff. At that time, I punched the Time Zero Override, started the stopwatch function on the spacecraft clock, and reported that the elapsed time clock had started.[/i]
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