Do you remember how I ended last post saying writing this wouldn't last as long as writing part 3? I lied. Also in the last post, I told you about my vacation in '06. We pick up next in May of the next year. I was 17 at this point (In case you're wondering, I was born at the end of summer of '89), and I was part of my school's ROTC program. There, I was a member of our shooting team, as was a girl henceforth referred to as Brittany. She, being almost a year older than me, was a few inches…