Nelson Tunney was a member of the United States Navy who was involved in the death of a tribal leader in Afghanistan. Upon realizing that Eric Donner had died from a pre-existing heart condition, Tunney attempted to switch the reports by going into the Pentagon, disguised as Donner and was successful in using Donner's clearance and ID card to get access to the area but was later confronted by Lauren Ross whom he was forced to kill before dumping her body in a storeroom when she attempted to call security, having realized that Donner was actually Tunney in disguise.