Everyone who isn't underwater or in outer space
On average, there are about 9,700 planes carrying 1.27 million people in the air at any given time. This number can fluctuate depending on various factors like time of day, season, and global events.
On average, there are around 9,700 planes carrying about 1.3 million people in the air at any given time. This number varies throughout the day depending on peak travel times and regions.
Too many.
...
I am not on the air anywhere, any time.
a lot
15
An air conditioning Unit keeps the entire facility cool in any type of weather. This keeps people comfortable and and happy especially in the Summer time.
The record for a freefall formation is currently 400. That said, how many skydivers could be in the air at any one time is limited by the number of aircraft and skydivers that could be gathered. If the area was large enough, enough lift, etc, it could be thousands.
As many as he or she can effectively control
Since it's a global site - there are probably millions browsing the site at any given time.
12,000 at any one time.