Best Places to Start

Department of Defense

The Department of Defense is the executive agency responsible for oversight of the U.S. Military and for the protection, security and defense of the nation.

Department of State

The U.S. Department of State is the executive agency responsible for oversight of foreign relations and foreign affairs.

Department of Homeland Security

The Department of Homeland Security is responsible for preventing terrorism attacks similar to the 9/11 terrorist attack and is responsible for border, coastal and aeronautical security for the United States.