Abstract: At 2:45 p.m. on October 9, 2018, Employee #1, the company owner, and three coworkers, employed by a construction framing company, were installing roof sheathing to a one-story wood-framed commercial storage building as part of a multi-employer construction project. They were using an articulated boom and scissor lifts. About halfway through the sheathing work, the trusses collapsed due to inadequate bracing. The owner, who was not using fall protection, fell, a fall height of greater than 16 feet. The coworkers were not injured. The owner was transported to the hospital, admitted, and treated for a fractured femur (thighbone).