The United Service Organizations Inc. (USO) is a nonprofit organization that provides live entertainment, such as comedians and musicians, and other programs to members of the United States Armed Forces and their families. Since 1941, it has worked in partnership with the Department of Defense (DoD), relying on donations from individuals, organizations, and corporations to fund its programs. The USO has more than 250 locations around the world, including in combat zones, and serves millions of military personnel and their families each year.