Exhibition Mode:
Beat all 20 Blue Impulse Missions to earn the Exhibition Mode. In this mode, you can select from various new maneuvers.

5-6 Formation:
Complete all 8 Sky Mission Attacks to earn the option to fly a 5 jet formation or 6 jet formation in the Free Flight mode.

Extra Options:
Enter TASCAS as your name. Now go to the Options menu and choose the "Special" option for HUD, Cockpit, and Player Assist.

Thanks to Revolution readers Monty and Mackdad!