You and your squad rappel down from your helicopter into the hospital, going through the skylight and into the reception room. You hear the helicopter fly away above you, as you and your 5 teammates, Blue Team, land and secure your weapons. The reception room is empty, save for a corpse slouched in the receptionist's chair. "Blue Leader, you and Blue Team need to find the cure for the virus down there. Weapons free. Command out." The comms crackle off, and you and your team are alone.