CHP officer airlifted after crash with semi-truck in Merced County, authorities sayA California Highway Patrol officer is being treated at a hospital after a crash with a semi-truck in Merced County. A California Highway Patrol officer is being treated at a hospital after a crash with a semi-truck in Merced County. A California Highway Patrol officer is being treated at a hospital after a crash with a semi-truck in Merced County. A California Highway Patrol officer is being treated at a hospital after a crash with a semi-truck in Merced County. Officer Zuniga says a good samaritan called 911 and another officer on duty was nearby, quickly responding.