ralia 1, Denmark 31, Germany 5, Japan 7,
Malaysia 2, Netherlands 1, Norway 9, Singapore 12, Sweden 5, UK 1)
registered in other countries: 732 (Antigua and Barbuda 8, Australia
2, Bahamas 106, Bermuda 23, Cambodia 6, Canada 10, Cayman Islands
42, Comoros 2, Cyprus 5, Ecuador 1, Greece 8, Hong Kong 29, Ireland
2, Isle of Man 4, Italy 17, South Korea 7, Liberia 98, Luxembourg 4,
Malta 23, Marshall Islands 123, Netherlands 14, Netherlands Antilles
1, Norway 1, Norway 7, Panama 126, Portugal 1, Puerto Rico 3, Russia
1, Saint Vincent and the Grenadines 18, Sierra Leone 1, Singapore
22, Trinidad and Tobago 1, Tuvalu 1, UK 12, Vanuatu 1, unknown 2)
(2008)

Ports and terminals:

Corpus Christi, Duluth, Hampton Roads, Houston, Long Beach, Los
Angeles, New York, Philadelphia, Tampa, Texas City

Military
United States

Military branches:

US Army, US Navy (includes Marine Corps), US Air Force, US Coast
Guard; note - Coast Guard administered in peacetime by the
Department of Homeland Security, but in wartime reports to the
Department of the Navy (2008)

Military service age and obligation:

18 years of age (17 years of age with parental consent) for male and
female voluntary service; maximum enlistment age 42 (Army), 27 (Air
Force), 34 (Navy), 28 (Marines); service obligation 8 years,
including 2-5 years active duty (Army), 2 years active (Navy), 4
years active (Air Force, Marines) (2008)

Manpower available for military service:

males age 16-49: 72,715,332
females age 16-49: 71,638,785 (2008 est.)

Manpower fit for military service:

males age 16-49: 59,413,358
females age 16-49: 59,187,183 (2008 est.)

Manpower reaching militarily significant age annually:

male: 2,186,440
female: 2,079,688 (2008 est.)

Military expenditures:

4.06% of GDP (2005 est.)

Transnational Issues
United States

Disputes - international:

the U.S. has intensified domestic security measures and is
collaborating closely with its neighbors, Canada and Mexico, to
monitor and control legal and illegal personnel, transport, and
commodities across the international borders; abundant rainfall in
recent years along much of the Mexico-US border region has
ameliorated periodically strained water-sharing arrangements; 1990
Maritime Boundary Agreement in the Bering Sea still awaits Russian
Duma ratification; managed maritime boundary disputes with Canada at
Dixon Entrance, Beaufort Sea, Strait of Juan de Fuca, an