Md. Code Ann., Pub. Safety § 7-106
For purposes of a workers' compensation or other law or benefit that would accrue to an individual, career or volunteer, who is performing a service anywhere for a fire, rescue, or emergency medical services entity under a mutual aid agreement, the individual is considered to have performed that service in the course of employment and in the line of duty.
Added by Acts 2003, c. 5, § 2, eff. Oct. 1, 2003.