"You have a huge job ahead of you. The challenges are many and the solutions are hard." Source: Senate Commerce Committee Chair Jay Rockefeller (D-WV).
A safety alert issued by ATC to aircraft under their control if ATC is aware the aircraft is at an altitude which, in the controller's judgment, places the aircraft in unsafe proximity to terrain/obstructions.
A confederation of Luftwaffe-related web sites, providing reference-grade coverage of the Messerschmidt 262 and other advanced combat aircraft of the Third Reich.