RSA 153-A:19 Mutual Aid.

I. The system of emergency medical services in this state shall include provisions for appropriate system response to incidents beyond the resource capabilities of individual emergency medical service units available on a regular daily basis. Written mutual aid arrangements may be established with neighboring emergency medical services systems to insure integration of care and shall consider the role of nonemergency medical services public safety agencies, their roles, relationships, and responsibilities in standard operation. A written mutual aid arrangement shall specify who shall be responsible for the direction of medical care at the scene. In the absence of a written agreement, while in the performance of their duties extending emergency medical services in a mutual aid situati