(1) As used in this section:

(a) "Police dog" means a dog used by a law enforcement agency specially trained for law enforcement work and under the control of a dog handler.

(b) "Accelerant detection dog" means a dog used exclusively for accelerant detection by the state fire marshal or a fire department and under the control of the state fire marshal or his or her designee or a fire department handler.

(c) "Dog handler" means a law enforcement officer who has successfully completed training as prescribed by the Washington state criminal justice training commission in police dog handling, or in the case of an accelerant detection dog, the state fire marshal's designee or an employee of the fire department authorized by the fire chief to be the dog's handler.

(2) Any dog handler who uses a police dog in the line of duty in good faith is immune from civil action for damages arising out of such use of the police dog or accelerant detection dog.