Northbound, you do write some crap on here. How can you tell from Google Earth what material is used on a roof. Must be some magic program you're using.
Hangar 2 and 3 have metal roofs so no chance of asbestos being in them.
Hangar 1 roof will be replaced soon so no need to worry.
I think you really need to get out a bit more rather than troll on here!!