From Business Insider: We got an inside look at what it's like on the first day for new freshmen, known as cadets, at the US Air Force Academy in Colorado Springs. In-Processing Day, or "I-Day," marks the beginning of these cadets' journey to becoming members of the "Long Blue Line" that represents Air Force officers. I-Day is the beginning of a challenging six-week basic training program all cadets are required to complete. After saying goodbye to their families, the cadets begin their journeys at the Air Force Academy.
