Here Be Danger
The Dark Zone is the most dangerous area players can explore in The Division. This closed off area houses powerful NPCs who would love to fill you with bullet holes, as well as human players who can (and will) kill you for your loot. It would be foolish to expect an easy time once you enter this zone.
Come prepared for a fight at any moment. Have your best weapons, solid armor, and skills that focus on healing and hiding. Some incineration grenades (think napalm) are useful to as they can cover a large area allowing for you to escape.
Not all other players will be as nice as you, or maybe they’re as evil as you. So always be on your guard.