chief warrant officer 
noun
A rank in the US armed forces, above warrant officer and below the lowest-ranking commissioned officer.This applies to staff sergeants and above, chief warrant officers two and above and first lieutenants and above to colonels....
- If they want to become a sergeant first class, a chief warrant officer, or a field grade officer, for example, they are going to have to plan on some extra days, attend meetings and planning conferences, and take on additional schooling.
- I distinctly remember a video of a chief warrant officer asking a lieutenant: ‘Do you think we can make it between those trees?’