hold down the x button then press up to get the airstrike symbol. then move it to the place you want and make sure it turns green. then confirm it and you are all good.

Hold X and push up to get the airstrike in your control. Then just place it over the tank,
and press X once it is green.
: D I was stumped on this for a while too.

As far as I can tell doing this on the ps2 causes them to throw grenades (which doesn't
make sense). It also seems to activate your team leader, in other words he simply reports
his name and rank but I'm not seeing any air strike Icon. Does any one have a link to a
.pdf or .doc file I could dl to get the instructions.

To call in an air strike on the PS2 simply press and hold square press up on the joy stick
and you should see an air strike icon.

Not all missions have the possibility of air strike. There should be an icon of a copter
or planet(whatever) right over the (TL) down left the screen. You'll just have to aim and
press up to then see a red laser. So just aim and press X

look on the manual or buy glasses and practice to read... *** question anyway, u must
live in threeth world..

You press and hold the square button then press up on the arrow keys. See the red thing?
Release the buttons and scroll towards the enemy tank, and it should turn green. Press the
x button to confirm the attack. Viola! That should work.
I know this was posted years ago, but there are people who come here via google for an
answer. :d im posting this for everyone. :d