Go to the town / US base to your east and speak to the officer over there who will give you some pointers, he'll tell you to also speak to the CDF officer behind you.
To get the heli to move, within your communication menu select 'request support', and while air transport is highlighted, click where you want to go or where to be picked up from.
PS, the chopper pilot is a MORON. When requesting pickup/dropoff make sure the LZ you pick has about 40 miles of empty space. If there is a tree/house/car/lamp post/dustbin nearby, you can guarantee he'll fly straight into it. Last time I requested extraction I selected a clear area at least 75x75m and he barrelled straight into the nearby woodland and took about about 4 trees before smashing into the ground and blowing up.....