I got verbal confirmation from the 45-wings commander we are go and we do not need death for us go I would like you to proceed. Copy that. And to deal with that verification is Rangel support today's launch. Need to press on. Pick up the call on your mark. Copy that. And SRO and TD need to put your hopes up to proceed position. 40 seconds remaining in our launch window. Range is go. DLS is the SRO hope been removed. Negative service. SRO and TD. And TD. I can remove the hole there to buy that. I'll turn it around on two and two. So need to put your hopes up and proceed position. Copy and proceed. DLS can be verified. DLS is verified. 15 seconds remaining in our hold. Copy that. 15 seconds remaining in our hold. DLS. Copy. ELS. Copy. Three. Two. One. T-minus five minutes and counting. TOTOTC perform APU start. TOT in work. TD, ROTC reconfigure heaters. Copy in order. T-minus four minutes, 41 seconds and counting. All systems are go and weather is green. White, direct ahead, Tiddy. Supply to Tiddy. And Tiddy, used in flight, I have two seconds of drain back hold remaining, two minutes. LGP, PLP, 3-18 years. Copy that. Pilot Eric Boe reporting three good auxiliary pilot units. Okay. Tiddy, Tiddy. Tiddy, Tiddy. Tiddy, Tiddy. Tiddy, Tiddy. Tiddy, Tiddy. Tiddy, Tiddy. Tiddy, Tiddy. The final helium purge of the three main engines is underway, and preparation for main engines start. Go for the American's NPD. Rain status goes for launch. And what is your status? We are go. Copy. Final test of the flight control surfaces is underway. This is a pre-program pattern of movements designed to verify the readiness of the flight control surfaces, the Elevon's speed brakes and rudder. Minus three minutes and 30 seconds and counting. Final arrow surface checks are complete. Discovery's three main engines will be gimbled through a pre-programmed series of maneuvers as a final test before launch. T-minus three minutes and counting. Final pressurization of the external tank's liquid oxygen tank is underway. Go for ETL-2, pressure station. And we're completing purge of the shuttle main engines. T-L-T-O-T-C-2, caution warning memory. Verify no unexpected errors. T-L-T-N-R-K. O-T-C-T-L-T, non-expected errors. The gaseous oxygen vent hood or beanie cap is slowly being retracted away from the top of the external tank. Orbitr test conductor John Crackson requesting pilot Erie Boe clear the caution in warning memory system. T-minus two minutes and counting. Liquid hydrogen replenish on the external tank is being terminated as planned. Team minus one minute, 30 seconds and counting. All systems are go. 90 seconds away from the launch of space shuttle discovery on her final mission. Team minus one minute, 10 seconds and counting. The liquid hydrogen tank inside the external tank is now at the proper flight pressure. Team minus one minute and counting. Ground launch sequencer will verify that the three main engines are ready to start. The booster joint heaters are being deactivated at this time. Team minus 48 seconds and we're transferring to Orbiter Internal Power. Discovery is now running on three on board fuel cells. Coming up on a go for auto sequence start at T-31 seconds. And we have a go for auto sequence start. Discovery's onboard computers have primarily controlable vehicles critical functions. 20 seconds. The sound suppression water system has been activated, protecting discovery and a launch pad from a mystical energy level. Go for main engine stove. We have engine speed. Two and one. We're transferring energy and a final look off of discovery. And to the dedicate, our orbit fly in a direction of the speed level. Travel it's through the tower. The station will have to launch this back. They've been arriving to the airport. Discovery now making one light switch. The stars. The air is now throttling down and the orbit passes through the area of maximum pressure reducing the stress on the shuttle as it goes supersonic. The electricity Flight Deck showing there's some activities the most important to follow in the vacuum. Active control, locks of flight voltage and air force Arizona. The engine is joined on the flight deck by pilot Eric Bowen, mission specialist Altrue and Nicole Stott. Mission specialist Mike Barrett and Steve Bowen. Discovery's three main engines are burning fuel at a rate that would rate an average swimming pool in about 25 seconds. The engines combined with the solid rocket boosters produce more than 7 million pounds of thrust. One minute 50 seconds into the flight, we're standing by for separation of the twin solid rocket boosters, discovery now traveling 2,695 miles an hour. It's altitude 24 miles, down range from the Kennedy Space Center 29 miles. Those are separation confirmed, Discovery's guidance is now converging as the shuttle's onboard computers fine-tune the flight. Two minutes 25 seconds into the flight, Discovery's traveling 3,189 miles an hour. It's altitude 37 miles, down range from the Kennedy Space Center 53 miles. Discovery now getting a boost into orbit from its twin orbital maneuvering system engines on either side of the shuttle's tail. These two engines will burn for two minutes and 32 seconds.