A Jacksonville security guard stopped a man from carjacking a woman in front of Knight`s Supermarket Monday night. Willie Scroggins, 65, heard the woman screaming for help as he locked up the store. He and two other workers rushed to her aid. "Three of us got him out the car, got him on the ground and held him until the cops got there," Scroggins said. The suspect, identified as Stefan Walker of Jacksonville, was charged with two counts of aggravated robbery and kidnapping. He is being held without bond.