can someone help me develop an accident sequence?

Fatality Investigation (Kentucky): Teen Completing Roofing Work Electrocuted The 16-year-old was attempting to move a ladder when it fell into a power line. On Monday, Sept. 10, 2018, at 8:00 a.m., a 16-year-old male roofer arrived at the worksite to begin roofing work on a private residential home. The homeowners, a husband and wife, contacted a local general contractor to replace the roof on their home. The owner of the general contracting company hired a subcontractor to perform the work, a process he informed authorities that he performs regularly. The crew began work on the back of the house and quickly worked together to complete the task. At approximately 12:00 p.m., the 16-year-old victim gathered a model D1828-2EQ Werner aluminum extension ladder and moved to the front of the house to begin work there while the other three men moved on to the side of the house. At the front of the house, there were two.4 ft. x 4 ft. boxwood bushes planted 3 feet from the home's exterior wall at the point where the victim was attempting to access the roof. There were no witnesses, but it is believed that because of the bushes, the victim was having trouble accessing the roof. With the ladder still fully extended, the victim attempted to move it closer by lifting the ladder and walking between the bushes to find a suitable base. The ladder became unstable, causing the victim to lose his balance falling backwards. As the victim and ladder were falling, the ladder fell into a top phase power line carrying 7.2 kilovolts (7,200 volts). Because the victim was still in contact with the highly conductive aluminum ladder when it struck the power line, electricity was able to travel through the metal and into the young worker. He was immediately electrocuted. After hearing a noise from the front of the home, the owner of the subcontracting company went to investigate and found the victim lying unresponsive on the ground. He immediately knocked on the home's front door and frantically tried to communicate to the wife what had happened and asked for help. The homeowner called 911 at 12:15 p.m. When EMS arrived eight minutes later, they observed the victim lying on the ground facing upwards. Both of the worker's boots had burn holes near the fifth toe; burn marks were also present on the stomach area. He was pronounced dead by the county coroner minutes later. In an interview with the county sheriff's office with the help of a translator, the coworkers stated that they were on the side of the home and did not observe this incident. The owner of the subcontracting company acknowledged that he had instructed the victim to move to the front of the house to continue work there. Both coworkers were aware that the victim was putting up a ladder to access the front roof and that the victim had not asked for assistance. Cause of Death The cause of death was high voltage electrocution