The Runway Finale is the fifth and final chapter of the fourth campaign, Dead Air. The Survivors exit the safe room in time to see a commercial airliner crash; presumably on account of its occupants and flight crew being Infected. The airport apron is a confused mass of bomb craters, destroyed aircraft and smashed infrastructure. Numerous passive Common Infected are loitering amidst the wreckage. The finale's Infected attack follows the usual Common and Special Infected, Tank One, Common and Special Infected, Tank Two and Bug Out sequence.