let's listen in. >> all three are still in good shape as are all of the other sims aboard the orbiter. a team of flight controllers watches over all the systems. 4:20 into the flight. "endeavour's" traveling 5500 miles per hour. altitude 63 miles traveling downrange, about 335 feet in altitude. environmental and control systems officer here reporting a good flash evaporator system reporting cooling to equipment aboard the vehicle. traveling into space on the forward flight deck is mark kelly and greg johnson. between and behind them, flight engineer -- >> to ato.