"Collateral Damage Estimate" Plot Hole
I've fired missiles and dropped bombs in combat, and I've seen a target through a scope that made me wonder why we were striking it --- but as a military person, one does what one is ordered to do. I'll leave it to all the others here to thrash out the deep ethical and philosophical questions raised by the film.
However, there is one aspect of the movie that seems to be receiving much weight: the notion that a CDE --- either below the magic 50% level, or above --- somehow means anything significant in the chances of survival of the girl. First it is only an estimate, and at 45%, it simply means that she has about four chances in ten of being killed/injured. Let's say the number was really the 65 percent --- so instead of four chances in ten, there are six chance in ten. Only by repeating that strike on a fresh target over and over again would you be able to demonstrate that either number was even in the ball park of being correct. And the results of just one strike on the target, even if the girl was in a very remote part of the area and the CDE was 10% or less, could still be fatal for her.
Way too much was made over that, although as a gimmick to show how ridiculous the civilian leadership can be (even though all the scenarios had already been preapproved), it served its purpose.