Sean O'Keefe looks over pieces of debris from the Space Shuttle Columbia with Shuttle Test Director Steve Altemus a member of the Columbia Reconstruction Project Team.

In the RLV Hangar, NASA Administrator Sean O'Keefe (left) looks over pieces of debris from the Space Shuttle Columbia with Shuttle Test Director Steve Altemus, a member of the Columbia Reconstruction Project Team. To date, more than 70,000 items have been delivered to KSC for use in the ongoing mishap investigation.