as augie and the president leave the stadium, the assassin shoots and kills nina, who was waiting in a van for the president and augie, and the ground units converge. duncan, who fought in the gulf war with the army rangers, takes augie's gun and manages to shoot two members of the ground team. the arrival of the secret service stops the shootout, and the president and augie are extracted. the secret service, ignoring the president's demands, had followed him after seeing the baseball tickets while searching nina earlier at the white house. the president's convoy heads to virginia, but they are ambushed again. two secret service agents are killed in the ensuing attack, but the president is unharmed and drives off with augie. he arrives at a safe house, where he takes stock of the events of the evening. he learns that nina and augie created and distributed a highly destructive computer virus for suliman, but they left and warned the us when they realized what it would do. the virus is scheduled to take effect the next day, which begins in a few hours.