Music Player
Complete game with a rank higher than First Lieutenant.

Free Mission Select
Complete Kingpin Mission. You van now select a Free Mission at 
the Start Game screen which
allows you to play or practice any of the missions in any order.

Lock Camera Angle
Press and hold S button during a replay to lock camera angle.

View All Aircraft
Complete the game as a General and a new options screen opens which 
allows you to view all of the
aircraft in the game.