This is my kinda stuff.  

Totally not required by anything - ie work, the family, the government.

Just required because it is a challenge.  A challenge which gets into your gut and overtakes everything.   The best part of being alive!

You can see the image is at a low altitude (take off) because the balloon is not expanded. 

It is not a competition.   No grades.  Massive amount of coordination with team members. Life on the line. No $;Paragon Space Development Corporation

An interesting report with details is here at the NYTimes