A 70-year-old Oklahoma City convenience store clerk was able to stop an attempted robbery by a gun-toting suspect even though she was only armed with a case of beer. Lein Nguyen was behind the counter at the Best Stop Food Mart when a woman entered the store with a gun and threatened the elderly cashier. "A black female entered the business, demanded cash from the clerk," an Oklahoma City Police Department rep said. After Nguyen turned her down, the woman struck her with the gun. "I told her, 'Honey, I don't have any money,'" Nguyen said. "'If you kill me, you don't have money either.'" The gun attack backfired on the suspect. "I got mad and I grabbed an eight-pack of beer and throw it at her," Nguyen said. The armed assailant fled from the store without getting any money and she is still on the loose. "I throw at her and I think that's why she run...I think I get lucky," Nguyen said.