Fairfield, AL - A 28-year-old man gunned down at a Fairfield gas station in March was apparently killed in a dispute over an engagement ring, and the brutal shooting was captured on store surveillance video.Adarius Elon Williams, a father of four who celebrated a birthday the day before he was killed, died April 8 in the parking lot of the Citgo station on Milstead Road. Vincent Washington, 25, and Barbara Washington, 31, are charged with murder in Williams’ death. Additionally, Vincent Washington is charged with first-degree kidnapping because the woman who drove him to the gas station said she wanted to leave, and he threatened her with her life.