Rollout of space shuttle Discovery was slow-going due to the onset of lightning in the area of Launch Pad 39A at NASA's Kennedy Space Center in Florida.

First motion of the shuttle out of the Vehicle Assembly Building was at 2:07 a.m. Aug. 4. Discovery's 13-day flight will deliver a new crew member and 33,000 pounds of equipment to the International Space Station. The equipment includes science and storage racks, a freezer to store research samples, a new sleeping compartment and the COLBERT treadmill. Launch of Discovery on its STS-128 mission is targeted for late August.