Region
United States
157
Colorado
26
China
3
European Union countries
2
India
2
Iraq
2
Aberdeen Proving Ground (Md.)
1
Africa South of the Sahara
1
Africa, Sub-Saharan
1
Alaska
1
America
1
Appalachian Region
1
Arctic Ocean
1
Arctic regions
1
Atlantic Coast (U.S.)
1
Atlantic Ocean
1
Balkan Peninsula
1
Baltic Sea
1
California
1
Canada
1
Caribbean Sea
1
Fort Monmouth (N.J.)
1
Germany
1
Guam
1
Haiti
1
Japan
1
Los Angeles County
1
Mayagüez Bay
1
Melanesia
1
Mexico, Gulf of
1
New York
1
New York (State)
1
North Atlantic Ocean
1
Outer space
1
Pacific Ocean
1
Puerto Rico
1
Russia, Northwestern
1
South China Sea
1
Southern States
1
Texas
1
Washington (State)
1