] A few days before the Columbia shuttle disaster, NASA
] noted that debris that hit the left wing during takeoff
] created "the potential for a large damage area to the
] tile."

NASA seriously needs to get their shit together. I am sure that if they had gotten their act together, the astronauts could have done -something-, at least made a spacewalk to survey the damage. NASA and their damn memos.

NASA memo warned of 'potential for large damage'