to "sidewalk churches". Along Main Street grew First Methodist, Conyers Presbyterian, and First Baptist. At some point, the congregants are thought to have persuaded the brothels and saloons to close and leave Conyers for Covington, using a mob. This rose out of revivals begun in 1878 with the Methodist and Presbyterian churches. First Baptist Church of Conyers moved out of downtown in late 2000, moving about 2 mi (3 km) south of the Georgia International Horse Park to their current location. Tightly connected to Conyers is Milstead, a mill town now incorporated into Conyers. At its peak, Milstead and Conyers had a private railroad that delivered products, such as cotton, from the mill to Conyers for shipping to the textile mills. In the 1960s, the mill closed. In 1944, a Trappist monastery (a Catholic order), Abbey of the Holy Spirit, was established south of the city by Dom Frederic Dunne. The Protestant community of Rockdale County helped with the completing of the current structure. M. Basil Pennington, one of the founders of the Centering Prayer movement, was abbot of the monastery from 2000 to 2002. In the 1950s, Conyers had a Coca-Cola bottling facility. In 1957, Lithonia Lighting moved from Lithonia. In the 1960s, Interstate 20 was built through the county. In the 1970s, parts of the first five episodes of the Dukes of Hazzard were filmed in the town. In the 1980s, Conyers became known for "White Road", where resident Nancy Fowler claimed to have seen apparitions of the Virgin Mary. Throughout the late 1980s and early 1990s, Conyers played host to pilgrims. In the early 1990s, several scenes of In the Heat of the Night were filmed around the Conyers Depot. Alan Autry, who played the character of Captain Bubba Skinner, was seen as a regular around Conyers during the filming. In 1996, Conyers hosted the equestrian and mountain biking events for the 1996 Olympic Games held in Atlanta. For this, Conyers built the Georgia International Horse Park. On May 20, 1999 a school shooting took place known as the Heritage High School shooting. Six students were injured before the 15-year-old gunman surrendered to the police. In October 1999, Rockdale County, and by extension the county seat of Conyers, gained substantial notoriety when the Public Broadcasting Service series Frontline aired a nationwide documentary entitled The Lost Children of Rockdale County detailing a syphilis outbreak among middle- and high-school-aged