there are 1,ooo,oo1 airplanes
How big is the hangar, how small are the airplanes.
Four airplanes were hijacked on 9/11.
About 22,00
138
Zero.
About 30,000.
677
2
39
74
12km and above is the stratosphere . Human life cannot exist with that air pressure.The airplanes stay just to the peak of the troposhere.