Final answer:
The question involves understanding the U.S. civil service and military grade structures concerning who may sign off on personnel reports, typically within the grades authorized by an E9 or GS-9 to GS-12 commanders.
Step-by-step explanation:
The question pertains to the authority levels within the United States civil service and military personnel structure. In particular, it asks about the grade levels at which individuals may have their reports signed by an enlisted Officer in Charge (OIC) at the grade of E9, or civilians in command positions within the grade range of GS-9 through GS-12. Given the information about the General Schedule (GS), which details the required education, skills, and experiences for various civil service positions, the answer to this question would likely involve the personnel being at or below certain grade levels that correlate with the authority of the E9 or GS-9 to GS-12 commanders or supervisors to sign off on their reports.