Region
United States
34
Europe, Eastern
16
Balkan Peninsula
13
Europe
10
Japan
6
European Union countries
5
Argentina
3
Europe, Central
3
Hungary
3
Kosovo (Republic)
3
Bosnia and Herzegovina
2
Brazil
2
East Asia
2
Serbia
2
Soviet Union
2
Asia
1
Buenos Aires
1
Cyprus
1
Europe, Western
1
Marine Corps Air Station Futenma (Japan)
1
North Macedonia
1
Okinawa Island
1
Syria
1