The Marine Corps Intelligence mission is to provide commanders at every level seamless, tailored, timely, and mission-essential intelligence and to ensure this intelligence is integrated into the operational planning process. Since Marine Corps intelligence activities are oriented toward the operational and tactical levels, two-thirds of all intelligence Marines serve in the operating forces, with the majority assigned to the staffs and units of tactical commands. Marine Corps Intelligence also provides the basis for all training, doctrine, and equipment development, and supports Marine Corps-specific and operational missions in maritime, expeditionary, land, and air warfare. Functionally, Marine Corps Intelligence provides intelligence support through its traditional intelligence disciplines consisting of: Human Intelligence (HUMINT) and Counter Intelligence (CI), Geospatial Intelligence (GEOINT) and Signals Intelligence (SIGINT).