In 2002, Hungary had a total of 33,400 active personnel in its armed forces, including an army of 23,600 and an air force of 7,700 equipped with 37 combat aircraft. There is a small army maritime wing with 270 personnel operating 50 river craft to patrol the Danube River. Paramilitary forces, consisting of frontier and border guards, under the direction of the Ministry of the Interior, number about 14,000. There are about 90,300 military reservists. The defense budget was estimated at $1.08 billion in 2002, or 1.8% of GDP. Hungary provides UN observers and peacekeepers to seven regions.