companies live together in the same barracks area. The commandant may decide to have cadets change companies at some point in their cadet career. This process is known as scrambling and the method of scrambling has changed several times in recent years. All 4,000 cadets dine together at breakfast and lunch in the Washington Hall during the weekdays. The cadet fitness center, Arvin Cadet Physical Development Center (usually just called "Arvin" by cadets and faculty), which was rebuilt in 2004, houses extensive physical fitness facilities and equipment for student use. Each class of cadets elects representatives to serve as class president and fill several administrative positions. They also elect a ring and crest committee, which designs the class's crest, the emblem that signifies their class and is embossed upon their class rings. Each class crest is required to contain the initials USMA and their class motto. The class motto is proposed by the class during cadet basic training and voted on by the class prior to the beginning of their freshman academic year. Class mottos typically have wording that rhymes or is phonetically similar with their class year. Cadets today live and work within the framework of the Cadet Leader Development System (CLDS), which specifies the roles that a cadet plays throughout their four years at the academy. Cadets begin their USMA careers as trainees (new cadets), then advance in rank, starting as CDT Privates (freshmen) and culminating as CDT Officers (seniors). Freshmen have no leadership responsibilities, but have a host of duties to perform as they learn how to follow orders and operate in an environment of rigid rank structure, while seniors have significant leadership responsibilities and significantly more privileges that correspond to their rank. Activities Cadets have a host of extracurricular activities available, most run by the office of the Directorate of Cadet Activities (DCA). DCA sponsors or operates 113 athletic and non-sport clubs. Many cadets join several clubs during their time at the academy and find their time spent with their clubs a welcome respite from the rigors of cadet life. DCA is responsible for a wide range of activities that provide improved quality of life for cadets, including: three cadet-oriented restaurants, the Cadet Store, and the Howitzer and Bugle Notes. The Howitzer is the annual yearbook, while Bugle Notes, also known as the "plebe bible," is the manual of plebe knowledge. Plebe knowledge is a lengthy