Cheat Codes: Enter these cheats or MILLIONS OF PEOPLE WILL DIE!
At the main menu, hold down L1, L2, R1, R2 until the Security Clearance menu opens. To select a letter, place the cursor over it and hold the X button. While still holding the X button use the Control Pad to cycle through the characters. When you're finished press Square.
All Bonuses: 54PALMER
All Missions: 72DESSLER
Infinite Ammo: 62ALMEIDA