The Puerto Rico Army National Guard maintains 48 armories, and is present in 30 communities. The Puerto Rico National Guard, like the National Guards in all 50 states, is a hybrid organization. National Guards are ordinarily under the control of state (or, in the case of Puerto Rico, Commonwealth) officials, but are organized pursuant to federal statute, and in war time or other emergencies, Guard units may be brought under federal control. The Puerto Rico Army National Guard and Reserve units support USARSO's many multilateral exercises and programs. It is through this integration of our Active Army, National Guard, and Reserves that US Army South [USARSO] can maximize resources to carry out missions.