Many special events are held on private property, with leadership shared among the venue owner/ private security and the local police and ire departments. Even when one law enforcement agency clearly has the lead and provides most of the resources—a July 4th celebration in a city park, for example—assistance from other law enforcement agencies may be needed (., sherif’s oice for prisoner transport, county police for standby tactical support). Inter-agency Agreement. In multiple agency situations, a simple, straightforward memorandum of understanding (MOU) or agreement (MOA) should be signed. It is critical to clarify the legal authority of assisting.