Chief Warrant Officer

Chief Warrant Officer is the highest warrant officer rank, above all warrant ranks and below Ensign. Like other warrant officers, these individuals started out as enlisted personnel, and now serve as specialized commissioned officers highly trained in one area (like engineering). Unlike regular commissioned officer who underwent training at Starfleet Academy, warrant officers gained their rank through years of service and obtained their authority through warrant from the President of the United Federation of Planets. Warrant Officers are capable of serving in any junior officer post.