The six first stage engines will be ignited at T-minus 1.6 seconds and commanded to 40 percent thrust. The thrust level is then increased to 100 percent at T-0 seconds. This engine start sequence allows for verification that all six powerplants are running normally before committing the Proton to launch. T-minus 90 seconds. The Block DM is confirmed ready for launch.
All systems are go.
T-minus 2 minutes and counting. The Block DM upper stage readiness for flight now being verified. No problems have been reported during the final countdown to liftoff. T-minus 4 minutes and counting. T-minus 5 minutes and counting.