Karen Wilkerson is a supervisor at a Navy facility and also the one who is responsible for murdering Petty Officer Dion Lambert. Her reasons for killing Petty Officer Lambert are never stated but it's presumed that she too was using the Navy computer system for her own gain. As such, she framed one of her employees, Petty Officer Niles Wilson to take the fall while she herself murdered Lambert to throw off any suspicion of herself. Wilkerson was eventually caught and presumably arrested and jailed.