No No, I meant what was the last scene that we saw jun in (He was going with Hasley as someone mentioned), not the last scene where it was implied that he died.
Again, we didn't really see Carter or Jorge die, but I doubt anyone could surve an explosion when you're at ground zero. Then again, they're spartans!
We know that kat, six, and emile died for sure though.
Also, didn't they confirm that jun was alive in the developer commentary?