DISA is a combat support agency of the Department of Defense (DoD). The agency is composed of nearly 6,000 civilian employees; more than 1,500 active duty military personnel from the Army, Air Force, Navy, and Marine Corps; and approximately 7,500 defense contractors. The agency provides, operates, and assures command and control and information-sharing capabilities and a globally accessible enterprise information infrastructure in direct support to joint warfighters, national level leaders, and other mission and coalition partners across the full spectrum of military operations.