Megastructures
Spy Fortress NORAD (2x20)
Fecha de emisión: Oct 25, 2005
Examining construction of North American Aerospace Defense Command (NORAD) in the Colorado mountains. Including the technical challenges it presented.
- Estrenada: Sept 2004
- Episodios: 196
- Seguidores: 10
- Finalizado
- National Geographic
- Martes a las 10