Interagency education, training, and assignments?
My last assignment involved the USCG supporting USN, USAF & USA as well as Homeland Security and law enforcement missions which included the alphabet soup of federal agencies and our regional public safety partners. If it could be done, we did it. As a result we (the royal we) conducted a myriad of multi agency operations
always using the National Incident Management System (NIMS) and the Incident Command System (ICS) as the format for constructing command structure, assigning responsibilities and coordinating logistics. Almost everybody associated with any command function completed the NIMS & ICS courses which gave us a common language and operational understanding.
We developed individual Incident Action Plans (IAP) for events or evolutions which were recurrent in the AOR. Despite the steady rotation of personnel experienced by military units, the canned IAPs ensured a consistently high level of performance from all stakeholders every time and shortened ramp up time for recently reported members. Additionally, since the ICS process was already the standard by which many civilian public safety agencies respond to disasters (natural or manmade) and mass causality events so we benefited from the real world experiences of our partners who had far more practice in applying the system.