
9 موسم
158 قسط
MegaStructures - Season 2 Episode 20
Examining construction of North American Aerospace Defense Command (NORAD) in the Colorado mountains. Including the technical challenges it presented.
- سال: 2012
- ملڪ: United States of America
- نوع: Documentary
- اسٽوڊيو: National Geographic
- چاٻي:
- ڊائريڪٽر:
- اداڪار: