What are your main concerns?

[TOF]

Not that I'm a big believer in Armageddon but.......

From the moment the balloon goes up, security would be my no.1 concern the first few weeks are going to be chaotic to say the least. Rush has hit it square on the head.

The threat of disease would probably be next, as after a few weeks without healthcare, bad hygeine practices and population proximity well, it's just an ideal set of circumstances to get a nasty bug brewing.

Food and water are next. Depending on the type of balloon(sorry) then it could be we are stuck indoors and unable to get out to forage, there could be some sort of contamination that would prevent harvesting any wild or home grown food.