Other origins for the name Nina include-English, Spanish, Native American, Hebrew, Spanish.The name Nina is most often used as a girl name or female name. English Name Meaning-Favor; grace. Variant of Ann or Anne: A variant of Hannah introduced to Britain in the 13th century.
Selection Process. Chief warrant officers are selected from enlisted members who have demonstrated exceptional long-term performance in various technical specialties. CWO programs are available to chief petty officers who have at least 12 but no more than 24 years of service.
Becoming a Warrant Officer Warrant officers are highly skilled, technical and tactical leaders who specialize, throughout an entire career, in one specific area. Although warrant officers make up only a small portion of the Armed Forces, they hold a great deal of responsibility.