The purchaser in the Panama City video was wearing a correctional officer's uniform of the kind used by Corrections Corporation of America, a private security firm. Videos and still photographs from the two Walmarts were compared, and the same man was seen entering and exiting the Massachusetts Walmart at the time when a phone card was purchased there. Police used these images to produce front-and-back composite images of the suspect. Subsequent queries directed to the private security firm's human resources department led to the identification of the phone card buyer as David R. Stewart – a married man with five children – who was then arrested.