The rescue rounds
Civilian Extraction is a mechanic introduced by Infection. On some rounds the players are told that a civilian needs help: they must find him, then escort him to an extraction point where a Warbird lands to pick him up, while the zombies go after him.
When
The game script of the map sets the first rescue round on round 6, the second on round 12, then one every five rounds: 17, 22, 27 and so on.
The round
It does not end while the civilian is still alive and waiting. Players report that the civilian can spawn behind a door they have not opened.
Helping him
The Ambulance of Value Voltage draws the zombies away with its siren, and the Electrified Floor of Hoard More does not hurt a civilian.
