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.
Salaries for Grades 14 and 15. As of 2013, grade 14 officers earned $96,690 a year at step 1 and $125,695 at step 10 with the smallest location adjustment. They earned $114,418 to $129,729 with the largest adjustment, according to the OPM pay table.