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.
District of Columbia retrocession
Almost immediately after the Organic Act of 1801, Congress took up proposals for the return of the territory to the states, all of which failed. Members of Congress proposed retrocession because they found disenfranchisement of the District's residents to be unacceptable. Other Congressmen were of the opinion that the District could not be immediately returned without the consent of the residents and the legislatures of Maryland and Virginia. Some representatives rejected the idea of retrocession entirely and concluded that the Congress lacked the constitutional authority to return the territory.