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chief warrant officer -- -- Chief Warrant Officer 1 -- CWO1-- Chief Warrant Officer 2 -- CWO2-- Chief Warrant Officer 3 -- CWO3-- Chief Warrant Officer 4 -- CWO4. When spelling out the rank of rear admiral, the use of upper half and lower half is optional. Doctors in the Navy are identified as Cmdr. (Dr.) John J. Jones on first reference: Dr ... ................
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