Airports - with unpaved runways: total: 9,398 over 3,047 m: 2 2,438 to 3,047 m: 6 1,524 to 2,437 m: 155 914 to 1,523 m: 1,661 under 914 m: 7,574 (1999 est.)
Heliports: 118 (1999 est.)
@United States:Military
Military branches: Department of the Army, Department of the Navy (includes Marine Corps), Department of the Air Force note: the Coast Guard is normally subordinate to the Department of Transportation, but in wartime reports to the Department of the Navy
Military manpower - military age: 18 years of age
Military manpower - availability: males age 15-49: 70,502,691 (2000 est.)
Military manpower - fit for military service: males age 15-49: 2,056,762 (2000 est.)
Military expenditures - dollar figure: $276.7 billion (FY1999 est.)
Military expenditures - percent of GDP: 3.2% (FY1999 est.)
@United States:Transnational Issues