Ventilators and loopholes, controlled by wires from the center, were cut in the ends and protected by sliding covers.  Lying in the passageway, one might look out at either end, and shoot out, too, if occasion required.  When fully loaded, the Wolf was submerged about half its height.  On the top was a staff from which floated an American flag.  The boys were very proud of the Wolf, and Jimmie had often declared, on the Columbia river trip, that he would some day take an exciting ride in it.