Music test:
Complete the game with a rank higher than First Lieutenant. A selection 
for music player mode will appear in the options menu. Any of the 28 music 
tracks on the game disc may be played. Press L1 or L2 to jump to the 
next track, R1 or R2 to jump to the previous track, Circle to select a track, 
Select to toggle the screen, and Square, Triangle, or X to quit. 

Free mission mode:
Complete the Kingpin mission. A "Free Mission" option that allows any 
mission to be played will appear at the opening menu. 

View all aircraft:
Complete the game with a rank of General. A new option will allow all 
aircraft to be viewed. 

Lock replay view:
Hold Square during a replay to lock the camera. 

Alternate mission map view:
Highlight the "Mission" option on the mission selection screen, and press 
Select. Three new viewing angles may be selected. 

Display rear view of Sony analog controller:
Press Select at the control configuration screen. 

XFA-27 fighter:
Complete the game under normal difficulty. Play the game again under 
hard difficulty and reach the low altitude surprise attack mission 
(Dead End). Locate and destroy the four YF-23As in the special 
Fox Force Four squadron south of the target. A medal and the XFA-27
will be awarded on the debriefing screen.