Missing In Action Codes -

Cheat mode:
Press [F1] at the indicated screen, then enter one of the following codes to activate the corresponding cheat function.

Effect	Screen	Code
Mission select	Mission room	mia level
All medals	Mission room	mia medal full
Mission completed	During game play	mia complete
Invincibility	During game play	mia dog

Enable all cheats:
Click on the dog tags in the mission room, then type mia cheats.