FAST Pack Glitch
     Begin  a space mission and use the Super Veritech. After you beat
the mission and select "Continue" you will start the next mission with
a Super Veritech even if the next mission does not allow FAST Packs to
be used.

Invincibility
     Enter  Training Mode, and select Fighter Training. Shoot down the
first  two  targets,  then  immediately  pause and quit Training Mode.
Begin story mode, and you should now be invincible.