Some time after the main graduation ceremony, each graduate participates in an unusual event. It's known as pinning. The young officers have changed from their cadet gray and whites to an officer's full dress uniform. He or she selects a favorite teacher who delivers the officer's commission and oath of office. Then the parents pin the strips on the shoulders that indicate rank.
This is done in a part of campus of the graduate's choice. Josh's sister and brother hold a flag that is given to him.