Final answer:
The Joint Operations Planning and Execution System (JOPES) is utilized by the Joint Planning and Execution Community (JPEC), which includes levels like the Chairman of the Joint Chiefs of Staff, combatant commands, military services, and defense agencies.
Step-by-step explanation:
The Joint Operations Planning and Execution System (JOPES) is used by the Joint Planning and Execution Community (JPEC), which comprises various levels of the United States Department of Defense (DoD). These levels include the Chairman of the Joint Chiefs of Staff (CJCS), the combatant commands, the military services, and defense agencies. JOPES supports the planning and execution of joint military operations, providing a set of rigorously structured procedures, a common operational language, and a versatile data interchange system. It facilitates the rapid and effective deployment of U.S. military resources in various operational scenarios, ranging from humanitarian assistance to full-scale warfare.