Abstract: On May 10, 2013, Employee #1 was landscaping and tree trimming. The employee was removing tree limbs from a tree on a private residence property. Employee #1 was elevated in the air approximately 25-ft above the tree to perform cutting and felling operations. A coworker was down at the ground level outside the "drop zone" to enter and remove felled logs from that area. The coworker had just cut through a large log and yelled, clear. The employee entered the drop zone area and was struck on the head by the falling log. Employee #1 fell back to the ground motionless. Emergency Rescue Service was called, and the employee was transported to a local hospital and then air lifted to Iowa City area hospital, where he later died.