the 5th wave

at the time of the 5th wave book, Cassie recently got shot in the uper leg and she rolled under a car next to her which is exactly what happens in the movie too, but the book went in more detail, like when Cassie new she was going into shock from the bullet wound and how she had no movement under the car and how she couldn't think what to do because she was going into shock, but she did do something somewhat smart and that was cover up the wound with a bit of cloth, Cassie was wondering when the person who shot her was going to show up but then she realised it must of been some sort of sniper which is what happens in the movie as well