A zone’s orbit does not have to be geographically located within the zone. This can allow a fighter to “hang back” behind its zone, and only vector into the zone for an intercept when required. Nor does a sector’s orbit (or a GCI controller) have to lie within its sector.

Surprisingly, a DCA zone (and its orbit) don’t even need to be geographically located within the sector for that sector’s controller to be able to vector/control the fighters in that zone/orbit (so long as they are located underneath that sector in the ADP hierarchy). This can allow for zones to extend beyond the bounds of the sector.