Retired Navy Admiral Harold W. Gehman Jr. visits the Thermal Protection System shop the shop manager.

Retired Navy Admiral Harold W. Gehman Jr. (second from left), chairman of the Columbia Accident Investigation Board, visits the Thermal Protection System shop and is briefed by Martin Wilson (second from right), the shop manager. Gehman and other members of the board are visiting sites at KSC to become familiar with the Shuttle launch process. The independent board is charged with determining what caused the destruction of the Space Shuttle Columbia and the loss of its seven-member crew on Feb. 1 during reentry.