(Cedar Rapids, IA) -- Cedar Rapids Police say a large, derecho-damaged oak tree fell on a man early this (Friday) afternoon, pinning him. Police say the 24-year-old man had been hired to cut down the tree behind a residence in the 18-hundred block of Aaron Drive NW. Police say during the process of removing the tree, it rotated and fell on him. Rescue crews used extrication tools, including air-bags to free the victim. He was taken to a Cedar Rapids hospital by ambulance and reportedly has serious injuries.