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.
For appointment to Warrant Officer One (W-1), a warrant is approved by the secretary of the respective service. Chief Warrant Officers (W-2 to W-5) are commissioned by the President of the United States and take the same oath as regular commissioned officers (O-1 to O-10).