Pieces of debris from Columbia lie across the grid on the floor of the RLV Hangar at KSC.

Pieces of debris from Columbia lie across the grid on the floor of the RLV Hangar at KSC. Members of the Columbia Restoration Project Team are examining pieces and attempting to reconstruct the orbiter as part of the investigation into the accident that caused the destruction of Columbia on its return to Earth from mission STS-107. To date, four shipments have arrived from Barksdale AFB, Shreveport, La., the collection point for debris.