A grandmother and her grandchildren were airlifted after their car veered from the highway ran into a tree in downtown Centertown Sunday afternoon. The driver, Nieve Lopez, 49, and her six-year-old granddaughter and four-year-old grandson, were all airlifted to Vanderbilt University Medical Center by a pair of helicopters that made their landing in a field near the former Centertown School. All three were conscious and responsive when they were carried from the scene by Warren County Ambulance Service and Centertown Fire personnel.