ORC Ann. 5502.29(I)
Home Jurisdiction Law Governs Personal Injury Liability
An individual who causes personal injury or property damage in Ohio is subject to the laws of their home jurisdiction when there is an interstate or intrastate agreement between Ohio and the home jurisdiction.
Mutual aid arrangements between subdivisions.
Personnel rendering assistance or aid pursuant to a mutual assistance or aid agreement authorized by this section remain employees or agents of their respective political subdivisions, including for purposes of tort liability and immunity from tort liability, and nothing in this section or any mutual assistance or aid agreement entered into pursuant to this section creates an employment relationship between the political subdivision requesting aid and the employees or agents of the political subdivision rendering aid.