Countdown is a map set on a missile launch site. There are several hangars situated on the outskirts of the map, which serve as main spawn points. There are also many vehicles as well as blast shields and concrete barriers which offer cover in the what would be rather open map. There are also a few uncovered silos, which will kill players who fall in.
Many players tend to climb onto silo covers, missiles, and trucks as they provide advantageous vantage points. Though they are often quickly taken out after a few kills because their field of view is very wide.
If an Airstrike is targeted in one of the empty missile silos, then the F-15s/MiG-29s will fly at ground level, and the airstrike will land at the base of the silo.
The over turned Gas Truck in front of Hangar 1 has the license plate of "RETARD", spelled with a backwards 'R', 3, T, 4, another Backwards 'R', and a D.
On the edge of the map, there are two containers and one trailer. They all have letters on them, one container says Inf Nty Wrd, which is Infinity Ward, another has Call of Duty, and the trailer says MW CoD, which is Call of Duty 4: Modern Warfare.
Noticeable from the far left vent is a tree floating outside the map.
The Airstrike jets will fly out of the mountains and right through them as the mountains are not solid.
If the player looks at the trucks mudflap, they can see the mudflap girl.