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.