A funeral for Jamison Kampmeyer will be held late Friday morning in Colby. Firefighters and members of law enforcement from across the state are expected to attend.
Kampmeyer was a deputy in the Marathon County Sheriff's Department as well as a volunteer firefighter.
Kampmeyere died while fighting a fire at the Abbey Theatre in Abbotsford. Four other firefighters were injured in the blaze.
Federal investigators from the Bureau of Alcohol, Tobacco, and Firearms are leading the investigation into the fire.
In honor of Kampmeyer Governor Scott Walker has ordered flags to fly at half-staff all day Friday.