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.
Upon the initial appointment to W-1 a warrant is issued by the secretary of the service, and upon promotion to chief warrant officer (W-2 and above) they are commission by the President of the United States, take the same oath and receive the same commission and charges as commissioned officers, thus deriving their authority from the same source.