Just started Arma 2 Reinforcements. Cue the cutscene, where we could all possibly die because we've been hit by a missile, and all of your chopper mates are creepily placid. They should be screaming for their lives or something. 
On to my issue.. 
I can't get out of the chopper!  
There's no directions, nothing to tell me what to do. So I sit in the chopper and watch my team mates get shot to pieces.  
I've pressed every key on the board, nothing happens! 
So. 
How do I get out of the chopper, anyone?