Just after 1500 hrs, Fire 50 was dispatched to an accident with updates of heavy entrapment. Fire 50 added Fire 53 for the rescue immediately. 5351 (Chief Brooks) arrived on scene and established command. Rescue 5041 was first due and immediately began stabilizing and extrication. Rescue 5341 (Cpt. Suhr) arrived moments later and assisted in extrication and then cleanup.