bkmark/ thx
spaceflightnow.com
2003 GMT (4:03 p.m. EDT)
The Main Propulsion System helium system is being reconfigured by pilot Ken Ham. Soon the gaseous nitrogen purge to the aft skirts of the solid rocket boosters will be started.
2002 GMT (4:02 p.m. EDT)
Now one hour away from launch of Discovery.