Wash. Rev. Code § 9.41.065
The exemptions from firearms restrictions in RCW 9.41.060 and 9.41.300 for correctional personnel and community corrections officers who complete government-sponsored law enforcement firearms training do not create a duty on the part of the state or local governmental entities with respect to the off-duty conduct of correctional personnel and community corrections officers involving the use or misuse of a firearm.
The state of Washington, local governmental entities, and their officers, employees, and agents are not liable for any civil damages caused by the use or misuse of a firearm by off-duty correctional personnel or community corrections officers based on any act or omission in the provision of government-sponsored firearms training to the correctional personnel or community corrections officers.
RCW 9.41.065