So I've been playing Operation Flashpoint: Dragon Rising, and I'm on mission 11 - Dragon's Fury. The first objective is to support Longsword's advance up the valley - in order to do this, you need to flank left and then destroy a tank with a Javelin antitank missile.
Every time I approach the point where I could launch the rocket, I get a message from Dagger One telling me that Longsword is taking casualties and that I need to hurry up. Before I can get the Javelin out and fired, Longsword loses one of their tanks.
I think I've played this mission three or four dozen times now and I've never been able to save Longsword One. Is it possible, or is losing LS1 part of a scripted event?