This handbook examines joint doctrine and the current policies, techniques, and procedures as practiced in the operational theaters. There is continual evolution on this subject as requirements, procedures, agreements, and best practices adapt to the joint and interagency community's needs. This handbook helps bridge the gap between current practices in the field and existing doctrine. It also offers some considerations for the future development of APSC-related joint doctrine, training, materiel (logistics), leadership, education, and facility planning.