Region
United States
346
Afghanistan
24
Europe
7
Russia (Federation)
5
China
4
Pacific Area
3
South China Sea
3
Africa
2
Arctic regions
2
Asia
2
Baltic States
2
Europe, Eastern
2
Korea (North)
2
Alaska
1
Central America
1
East China Sea
1
Foreign countries
1
Great Lakes (North America)
1
Indo-Pacific Region
1
Iraq
1
Islands of the South China Sea
1
Pacific States
1
Philippines
1
Washington (D.C.)
1
Western Hemisphere
1