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.
Reconstruction era
During fall 1865, out of response to the Black codes and worrisome signs of Southern recalcitrance, the Radical Republicans blocked the readmission of the former rebellious states to the Congress. Johnson, however, was content with allowing former Confederate states into the Union as long as their state governments adopted the 13th Amendment abolishing slavery. By December 6, 1865, the amendment was ratified and Johnson considered Reconstruction over. Johnson was following the moderate Lincoln Presidential Reconstruction policy to get the states readmitted as soon as possible.