in the two years since he 'd shipped out here to firebase foxtrot , he 'd racked up a noticeable amount of scars : a large white one that arched through his eyebrow , given to him by an angry taliban bastard that had used his face for knife practice ; a grisly scar that leapt up from his collar caused by shrapnel from an ied that also killed two of his friends ; and a last scar that , well , was in a place the sun did n't shine .