Arnold was also responsible for Army aircraft production and specifications compliance for both airframes and engines. His many and varied duties took him frequently to College Park, right up until the day it closed in June 1913. On a few occasions he took Bee and the meddlesome Betty to the airfield with him, and after flying trials concluded, they attended a baseball game or other social event. His love interest won, he entertained her as best he could, showing her everything about the world he hoped she would soon be joining.