It was the best duty he ever had, recalls Alan Lertzman. The newly commissioned 2nd Lieutenant was assigned to Air Defense Command and stationed at Swarthmore, a girl's school in Philadelphia, but that ended all too soon as he was put on a plane for Korea and on the job training as a Forward Observer. As a Forward Observer, he had to quickly learn how to call in artillery strikes on Chinese positions, and avoid being taken out by Chinese patrols. (5:47)