Navy and Marine Regiments, and the Fightin' Texas Aggie Band, whose members may be affiliated with any military branch. Parson's Mounted Cavalry is the only mounted ROTC unit in the United States. The Ross Volunteer Company, one of the oldest student-run organizations in the state, is the official honor guard for the Governor of Texas. The Fish Drill Team, a precision, close-order rifle drill team composed entirely of Corps freshmen, represents Texas A&M in local and national competitions. The team have won the national championship almost every year since their creation in 1946, and have appeared in several Hollywood films, including A Few Good Men and Courage Under Fire, in which they had prominent roles. The Fightin' Texas Aggie Band, the nation's largest precision military marching band, provides music for university functions and presents halftime performances at football games. Some band drills are so complicated they require band members to step between each other's feet to complete the maneuvers. Membership of the Corps of Cadets is a requirement for joining the Aggie Band, whose members live by the same standards, schedules, and regimens as the rest of the Corps. Activities Texas A&M has over 1,000 student organizations, including academic, service, religious, social, and common interest organizations, and hosts 58 nationally or internationally recognized Greek Letter Organizations (GLOs). About 10% of the undergraduate population is affiliated with a GLO fraternity or sorority. One of the oldest student organizations is the Singing Cadets, an all-male choral group with about 70 members not affiliated with the Corps of Cadets that was founded in 1893. Texas A&M Hillel, the oldest Hillel organization in the United States, was founded in 1920 at the original college. Since 1955, the MSC Student Conference on National Affairs has held conferences, lectures, and other programs to discuss national and international issues with speakers. The Department of Recreational Sports provides athletic activities to the university community; sports facilities include the Student Recreation Center, a natatorium; the Penberthy Rec Sports Complex; and the Omar Smith Instructional Tennis Center. The Student Government Association (SGA), one of A&M's largest organizations, has over 1,300 student members in three branches, fifteen committees, and four commissions. The Graduate Student Council, which was founded in 1995, serves as the student government for Texas A&M University's graduate and professional students. Student organizations have had a nationwide impact. Texas A&M students founded the largest one-day, student-run service project in