There is something about this movie that engaged me.
I have watched it like 5 or 6 times -- part of it is I can suspend disbelief and put myself into it "as if."
There are other aspects that just keep me coming back.
It is also a great time killer on flights -- it moves pretty well and is a nifty little 85 minutes it handles that lost hour and a half that most films won't fit into these days.
They are talking about a sequel -- the same event seen from the military perspective.