My first reaction after reading the whole of the chapter was the way things fall too perfectly into place. Savannah just happens to be walking by his house. Given that we know nothing of the setting, where each of them lives in relation to the school, etc, it seems incredibly odd. And then, later, a police car comes up at exactly the right time- classic case of deus ex machina.

Another note which is only really relevant for the beginning of the chapter is that the way you switch your focus from one character to the other without page breaks or anything to indicate transition is disturbing. I'm jumping straight from the thoughts of one to the thoughts of the other. You don't really cover anything unique or important about Savannah, so just take out the parts focusing on her and zoom in on Brandon instead.

Consider that if she'd been bleeding profusely Brandon would likely have been able to see the blood despite the jacket, either through the material or from the unbound wound dripping blood down the arm.

I like some of the language you use. '"tornado" position'

I have difficulty seeing Brandon's motivation. Why is he so very nice to this girl, especially in the beginning. I can't imagine giving my jacket to someone I don't know, let alone letting them go home with it. There are plausible reasons out there, but you need to supply one.

-Lucien