At Launch Pad 39A at NASA's Kennedy Space Center workers spray a concrete called Fondue Fyre into steel grid structures.

At Launch Pad 39A at NASA's Kennedy Space Center, workers spray a heat-resistant concrete called Fondue Fyre into steel grid structures, welded to the wall of the flame trench. Fondue Fyre was developed during NASA's Apollo lunar program. Damage to the trench occurred during the May 31 launch of Discovery on the STS-124 mission. A 75- by 20-foot section of the east wall was destroyed and debris scattered as far as the pad perimeter fence. Repairs are expected to be completed before the targeted Oct. 8 launch of Atlantis on the NASA Hubble Space Telescope servicing mission. Photo credit: NASA/Jack Pfaller