A theory of explanation might treat explanations in either a realist or an epistemic (that is, anti-realist) sense. A realist interpretation of explanation holds that the entities or processes an explanation posits actually exist--the explanation is a literal description of external reality.
Officers in pay grades O-1, O-2, and O-3 with more than four years of prior cumulative service in an enlisted or warrant officer grade are paid increased wages using the special pay grades of O-1E, O-2E, and O-3E, respectively.
The lowest-average salary range was reported to be $32,930-$56,350. These lower wages were found in states that included West Virginia, Kansas, Alabama, North and South Dakota, Tennessee and Arkansas. While California had the highest employment level of all states, South Dakota had the highest job concentration.