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• The fill rates of most space jobs would not be affected by reductions in the total number of institutional requirements (IRs) allocated to the space career field. If fewer IRs were assigned to the career field, the biggest effect on fill rates would occur for jobs with slightly less priority than IR positions, particularly staff jobs at the O-4 grade.
• Being assigned to an IR position has the potential for both positive and negative effects on officer development and career progression. Negative IR effects on space officers' careers do exist, but they could be lessened by careful job selection and position prioritization.

This report summarizes findings from modeling the effect of filling institutional requirement (IR) positions on a career field's health, given that filling IR positions draws labor away from core authorizations. The authors adapted RAND's Military Career Model, a detailed personnel simulation model, to evaluate the impact of changes to IRs on the space officer career field and study IRs' effect on a variety of career field metrics, including the ability to fill core requirements and IR positions simultaneously. The report also examines how changing the number of IRs affects the operational development, career experience diversity, and career paths of space officers. According to the model, the fill rates of most space jobs would not be affected by reductions in the total number of IRs allocated to the space career field. If fewer IRs were assigned to the career field, the biggest effect on fill rates would occur for jobs with slightly less priority than IR positions, particularly staff jobs at the O-4 grade. IR effects on space officers' careers do exist, but they could be lessened by careful job selection and position prioritization.

• Chapter One

  Introduction

• Chapter Two

  Calibrating the Military Career Model

• Chapter Three

  Results: Reducing the Number of IR Positions

• Chapter Four

  Conclusions and Recommendations

• Appendix

  Statistics on Jobs in Model