United States 276
Europe, Eastern 78
Europe 52
Japan 38
Europe, Central 18
Balkan Peninsula 14
China 14
Poland 13
Hungary 11
Russia (Federation) 11
Former Soviet republics 10
Romania 8
European Union countries 7
Asia 4
Bosnia and Herzegovina 4
Soviet Union 4
California 3
Czech Republic 3
East Asia 3
Europe, Western 3
Kosovo (Republic) 3
Asia, Central 2
Asia, Eastern 2
Bulgaria 2
Developing countries 2
Foreign countries 2
Iran 2
Mexico 2
Southern States 2
Twentynine Palms 2
Africa 1
BRIC countries 1
Central America 1
Cuba 1
Cyprus 1
Egypt 1
Eurasia 1
European Economic Community countries 1
Former communist countries 1
Germany 1
Haiti 1
Islamic countries 1
Israel 1
Korea (South) 1
Kuwait 1
Latin America 1
Marine Corps Air Station Futenma (Japan) 1
Massachusetts 1
Middle East 1
North Macedonia 1
Northern Ireland 1
Okinawa Island 1
Russia 1
Somalia 1
South Africa 1
South America 1
Spain 1
Turkey 1
Vietnam 1
West Virginia 1
Yugoslavia 1