In-flight mechanic
In some levels there are little tank-like units that
remain stationary. These are the units that shoot out the lightning
and repair structures. They cannot move on their own, but you
can pick them up to place them anywhere and they will slowly repair
any nearby units or structures. If you pick one up and fly around
with it, whenever you take on damage it will fix your ship. Be
careful though, because any enemies that may shoot at you from
below could hit it, and they cannot repair themselves. However,
sometimes it better to leave them near your base so they will
repair things as needed.
In-flight artillery
If you need a little extra firepower for your ship,
look for a tank and pick it up. As long as you are holding the
tank, it will act like a rotating turret for your ship and fire
upon any enemy units that get within its range. The tank's cannons
will rotate 360 degrees so it can attack enemies all around you.
This is very useful if you do not want to deal with having to
make constant maneuvers to avoid being hit by an enemy that is
tailing you.
Faster weapon recharge
You can make weapons that are rechargable recharge
faster when you get the power-up by holding [A] for about
five to ten seconds. Release [A] and your weapon should recharge
faster than normal.