Shuttle Launch Director Mike Leinbach answers reporters' questions in the RLV Hangar. Leinbach is overseeing assessment of the debris, seen in the background, as it is delivered to KSC. The Columbia Reconstruction Project team is identifying pieces and placing them on a grid approximating the shape of the orbiter. Shipped from Barksdale Air Force Base, Shreveport, La., more than 70,000 items, weighing 78,000 pounds, about 36 percent of the Shuttle by weight, have been delivered to KSC for use in the mishap investigation. Ground teams have completed 78 percent of their primary search area, and airborne crews finished 80 percent of their assigned area. Search teams have completed 98 percent of the underwater searches in Lake Nacogdoches and Toledo Bend Reservoir.