Which military term refers to a document that specifies airspace coordination?

The term that refers to a document outlining airspace coordination is specifically the "Airspace Control Order." This document is crucial in military operations, as it provides detailed guidance regarding the management of airspace among various units during a mission. It clearly delineates the responsibilities, restrictions, and procedures for using airspace, ensuring that multiple air operations can occur safely and effectively without conflict.

This document typically includes information on the designation of airspace, coordination between different military branches, and the integration of air defense measures, which are all essential for maintaining operational control and ensuring the effectiveness of air operations.

Other options, while they may relate to air operations, do not capture the specific function of outlining airspace coordination. Thus, the "Airspace Control Order" emerges as the most accurate terminology for this particular aspect of military aviation operations.