What document best describes the joint force tasks mentioned by SSgt Heeler?

The National Military Strategy is the most relevant document that describes the joint force tasks mentioned by SSgt Heeler. This strategy outlines the overarching approach by which the U.S. military executes defense initiatives, addressing how the various branches of the armed forces work together to achieve national defense objectives. It encompasses the missions, tasks, and broader roles that forces will undertake, emphasizing collaborative operations and joint capabilities.

While other documents such as the National Defense Strategy provide guidance on broader national security objectives and priorities, they do not specifically provide detailed operational tasks for the joint force. The Joint Operations Handbook offers insights into operational planning and execution but does not encapsulate the strategic framework as comprehensively as the National Military Strategy. Similarly, the Air Force Doctrine Document pertains specifically to Air Force operations and may not cover inter-service tasks or strategies relevant to the entire joint force effectively. Thus, for understanding the tasks assigned to joint forces, the National Military Strategy stands out as the most pertinent reference.