A major component of defence expenditure is payments for Armed Forces financed from within the Ministry of Defence budget. Armed Forces include land, maritime and air forces as well as joint formations, such as Administration and Command, Special Operations Forces, Medical Service, Logistic Command, Space Command, Cyber Command. They might also include parts of other forces such as Ministry of Interior troops, national police forces, coast guards etc. In such cases, expenditure is included only in proportion to the forces that are trained in military tactics, are equipped as a military force, can operate under direct military authority in deployed operations, and can, realistically, be deployed outside national territory in support of a military force. Expenditure on other forces financed through the budgets of ministries other than the Ministry of Defence is also included in defence expenditure.