914 to 1,523 m: 460
under 914 m: 1,081 (2006)

Heliports:
1 (2006)

Pipelines:
gas 22,705 km; liquid petroleum gas 1,875 km; oil 8,688 km;
oil/gas/water 228 km; refined products 6,520 km (2006)

Railways:
total: 17,562 km
standard gauge: 17,562 km 1.435-m gauge (2005)

Roadways:
total: 235,670 km
paved: 116,751 km (including 6,144 km of expressways)
unpaved: 118,919 km (2004)

Waterways:
2,900 km (navigable rivers and coastal canals) (2005)

Merchant marine:
total: 56 ships (1000 GRT or over) 751,607 GRT/1,129,234 DWT
by type: bulk carrier 2, cargo 6, chemical tanker 6, liquefied gas
4, passenger/cargo 9, petroleum tanker 25, roll on/roll off 4
foreign-owned: 5 (Denmark 2, France 1, Norway 1, UAE 1)
registered in other countries: 15 (Belize 1, Honduras 1, Liberia 1,
Panama 5, Portugal 1, Spain 3, Venezuela 3) (2006)

Ports and terminals:
Altamira, Manzanillo, Morro Redondo, Salina Cruz, Tampico,
Topolobampo, Veracruz

Military Mexico

Military branches:
Secretariat of National Defense (Secretaria de Defensa Nacional,
Sedena): Army (Ejercito), Mexican Air Force (Fuerza Aerea Mexicana,
FAM); Secretariat of the Navy (Secretaria de Marina, Semar): Mexican
Navy (Armada de Mexico, ARM, includes Naval Air Force (FAN) and
Marines) (2006)

Military service age and obligation:
18 years of age for compulsory military service, conscript service
obligation - 12 months; 16 years of age with consent for voluntary
enlistment (2004)

Manpower available for military service:
males age 18-49: 24,488,008
females age 18-49: 26,128,046 (2005 est.)

Manpower fit for military service:
males age 18-49: 19,058,337
females age 18-49: 21,966,796 (2005 est.)

Manpower reaching military service age annually:
males age 18-49: 1,063,233
females age 18-49: 1,043,816 (2005 est.)

Military expenditures - dollar figure:
$6.07 billion (2005 est.)

Military expenditures - percent of GDP:
0.8% (2005 est.)

Transnational Issues Mexico

Disputes - international:
Abundant rainfall in recent years along much of the Mexico-US
border region has ameliorated periodically strained water-sharing
arrangements; the US has intensified security measures to monitor
and control legal and illegal personnel, transport, and commodities
across its border with Mexico; Mexico must deal with thousands of
impoverished Guatemalans and other Central Americans w