Andrew Mullen, a 39-year-old man accused of shooting a woman at Atomic Golf in Las Vegas, was a contracted security guard at the business and used office furniture to barricade himself inside an office for several hours. The incident occurred around 8 a.m. on April 18, when Mullen allegedly shot a woman in the chest and she was taken to U.m., where she received treatment for a single gunshot wound. Police were able to access the business's security video feed to identify Mullen. Six hours later, Mullen surrendered and was taken into custody. He is facing several charges including assault and possession of marijuana.