a person who holds a commissioned rank in the United States Navy or the United States Coast Guard
2
an officer holding a commissioned rank in the United States Navy or the United States Coast Guard
3
occurs in uranium ores but can be produced by bombarding bismuth with neutrons in a nuclear reactor n a noncommissioned officer in the Navy or Coast Guard with a rank comparable to sergeant in the Army n a European river
4
a senior noncommissioned officer in the Navy or Coast Guard with a rank comparable to master sergeant in the Army
