On Monday, August 13, 2018, a Utah Multi-Agency Taskforce (TF2), with leader (TFL2), and a Kings County Strike Team of Type VI Engines (STF1) were assigned to Branch I, Division C of the Ranch Fire located above the community of Ukiah in Mendocino County, California.
On the northwestern flank of the fire, aerial retardant drops were used to reinforce the dozer line. TFL2, two Fire Captains (FC1 and FC2) and a Fire Apparatus Engineer (FAE1) from STF1 were struck by falling tree debris resulting from a retardant drop. TFL2 was struck by an uprooted tree and suffered fatal injuries. FC2 was struck by a broken tree top and suffered major injuries. FC1 and FAE1 were struck by falling tree debris that caused moderate injuries.