Space Shuttle thermal protection system
On February 1, 2003, the Space Shuttle "Columbia" was destroyed on reentry due to a failure of the TPS. The investigation team found and reported that the probable cause of the accident was that during launch, a piece of foam debris punctured an RCC panel on the left wing's leading edge and allowed hot gases from the reentry to enter the wing and disintegrate the wing from within, leading to eventual loss of control and breakup of the shuttle.
Redeemers
When Reconstruction died, so did all hope for national enforcement of adherence to the constitutional amendments that the U.S. Congress had passed in the wake of the Civil War. As the last Federal troops left the ex-Confederacy, two old foes of American politics reappeared at the heart of the Southern polity – the twin, inflammatory issues of state rights and race. It was precisely on the ground of these two issues that the Civil War had broken out, and in 1877, sixteen years after the secession crisis, the South reaffirmed control over them.