Use a satellite or artillery strike to blow up
the blimp in levels with them.
Fly With Flp-e
Press L1 (strafe left) and R1 (stafe right) with the flp-e tank to fly.
Stock Up On Power-ups
Go to San Diego or Yokahoma and go in one of the
two side buildings and get on the power-up. Now
the enemy won't attack you (if it is a computer)
and you can safely pick up power-ups.