Highlight a chopper on the chopper selection screen. Press L to display the statistics screen. Press the Analog-stick to control the rotating model of the chopper.
Hold Z and press Right, Left, Up, Down, A, B, Start when "Press Start" appears on the opening screen.
While playing, press Z + C-Up + C-Down, then launch a homing cluster at your opponent. If it hits, you will see the president jump out of the plane.
At the "Press Start" screen, press C-Up seven times.
Different Views in Chopper Select Screen
Go to a chopper but don't pick it yet. Hit the L button. There should be a screen with statistics and a rotating picture of your chopper. You can now use the analog stick to control the chopper's rotation.
When "Press Start" appears on the opening screen, hold Z and press Right, Left, Up, Down, A, B, Start.
Beat level 7 on expert mode to get the alien disruptor.