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CAPE CANAVERAL, Fla. – This elevated view of Launch Pad 39A at NASA's Kennedy Space Center shows workers filling steel grid structures, welded to the wall of the flame trench, with a heat-resistant concrete called Fondue Fyre, developed during NASA's Apollo lunar program. At left are the pad's "rainbirds." These nozzles are part of the pad sound suppression system which protects the orbiter and its payloads from being damaged by acoustical energy reflected from the mobile launcher platform during liftoff. 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