The Carrier is a sentient spaceship and a member of (as well as home base and vehicle for) The Authority. It is 35 miles high, 50 miles long, 2 miles wide
and exists outside of space and time. It is capable of traversing the Bleed, which is the red "space" between alternate universes. It can open Doors anywhere on the planet to allow The Authority to get where they need to be quickly.