Columbia space shuttle tragedy

Members of the Columbia Reconstruction Project Team continue to examine and identify pieces of debris from Space Shuttle Columbia that were shipped to KSC May 13, 2003 at the Kennedy Space Center, Florida. The items at KSC number more than 82,000, weigh 84,800 pounds or 38 percent of the total dry weight of Columbia. (Photo by NASA/Getty Images)

Members of the Columbia Reconstruction Project Team continue to examine and identify pieces of debris from Space Shuttle Columbia that were shipped to KSC May 13, 2003 at the Kennedy Space Center, Florida. The items at KSC number more than 82,000, weigh 84,800 pounds or 38 percent of the total dry weight of Columbia. (Photo by NASA/Getty Images)