Administration: Union Aerospace Corporate Division

Administration: Union Aerospace Corporate Division is the fourth level of Doom 3. The pinky demon is introduced at a cutscene. The growth taking over the base is first seen, and this is where monsters start teleporting in. The player has the first opportunity to receive a chaingun, locked inside a Martian Buddy storage cabinet. The player must find William Banks' PDA to continue on to Alpha Labs.

PDAs

 * Alan Dorweiler
 * Jonathan Moses
 * William Banks
 * Paul Simons

Charaters

 * Dying Marine
 * UAC announcer
 * Elliot Swann
 * Malcolm Betruger
 * Jack Campbell
 * Joe

Enemies

 * Jumpsuit Zombie
 * Suit Zombie
 * Scientist Zombie
 * Pistol Z-Sec
 * Machine Gun Z-Sec
 * Shotgun Z-Sec
 * Fat Zombie
 * Imp

Weapons/Items:

 * Pistols
 * Shotguns
 * Machine Guns
 * Grenades
 * Chaingun
 * Medkits
 * Clips
 * Shells
 * Bullets
 * Ammo Belt
 * Security Armor
 * Armor Shards

Cabinets

 * Cabinet #013: 586
 * Martian Buddy Cabinet: 0508