Well, they're not technically "in action," we suppose -- more like action's going on around and within them. So, more accurately, you can see the Halo 3
maps that will ship with Halo 3: ODST
(Citadel, Heretic, and Longshore) in the general vicinity of action
after the break.
You'll be surprised to hear that the maps all look like they're set in some alien, intergalactic space cabin. No, it's true!Citadel: