Merchant marine:
total: 466 ships (1,000 GRT or over) 12,436,658 GRT/14,630,116 DWT
by type: barge carrier 8, bulk 69, cargo 75, chemical tanker 12,
combination bulk 2, combination ore/oil 1, container 100,
multi-functional large load carrier 3, passenger 12, passenger/cargo
2, petroleum tanker 81, refrigerated cargo 3, roll on/roll off 83,
short-sea/passenger 3, vehicle carrier 12
foreign-owned: Australia 2, Canada 7, Denmark 17, Malaysia 1,
Netherlands 1, Norway 6, Singapore 3, United Kingdom 5
registered in other countries: 670 (2004 est.)
Airports:
14,807 (2003 est.)
Airports - with paved runways:
total: 5,128
over 3,047 m: 188
2,438 to 3,047 m: 221
914 to 1,523 m: 2,383
under 914 m: 961 (2004 est.)
1,524 to 2,437 m: 1,375
Airports - with unpaved runways:
total: 9,729
under 914 m: 7,843 (2004 est.)
over 3,047 m: 1
2,438 to 3,047 m: 7
914 to 1,523 m: 1,718
1,524 to 2,437 m: 160
Heliports:
155 (2003 est.)
Military United States
Military branches:
Army, Navy and Marine Corps, Air Force, and Coast Guard (Coast
Guard administered in peacetime by the Department of Homeland
Security, but in wartime reports to the Department of the Navy)
Military manpower - military age and obligation:
18 years of age (2004 est.)
Military manpower - availability:
males age 15-49: 73,597,731 (2004 est.)
Military manpower - fit for military service:
NA (2004 est.)