As David Ryan watches the 9/11 attacks during high school math class, he knows-no matter what-he will defend his country. His desire to join the military isn't a new one. He's dreamed of it since childhood, when he looked to military men, both in history and in his family, as heroes. David envisions a life of military glory and achievement, of helping others, and bringing peace. He follows the footsteps of some of the military's greatest figures to...