[postalrat]

For how far? For example it doesn't extend to the atlantic ocean.

[aqfamnzc]

Airspace classification is pretty well-defined in the US. https://www.faa.gov/uas/getting_started/where_can_i_fly/airs...

[rch]

If they have a sign on the fence that says 'no photography' then that would probably apply to a weather balloon irrespective of distance.

The signs are also probably not needed.