(adsbygoogle = window.adsbygoogle || []).push({}); i had found this place. its in one of the 2 circles, i'm not sure.
found by bjfirepanda

if you can not see the picture this is what you do, go to the center building. go to the couch,go to the tip of the couch or go to in between the hq and couch(not sure wich one) get 2 kills and you'll have it

The airborn challenge is get 2 kills with bullets well in mid air. He is talking about an area that makes you float like 1 foot in the air is works on the tail of the plane on afgan also.

Me?

the challenge is "Kill 2 enemies while you're in the air"??

is thats what your talking about then thats easy, you can just have two people in domination, have commando...etc..