Where would i get Stingers missiles in Call Of Duty 4

Hey Folks,

I'm trying to play Call Of Duty 4 on my system. The problem is that i cannot find the stinger missiles to destroy the helicopter on my pc. I'm on a stage where i need the stinger missiles to clear the stage and move further. Can any one tell me that where would i find the stinger missiles? Have any body played this game? Please let me know where would i get stinger missiles in Call Of Duty 4. Any help on the above issue would be appreciated.

Thanks.

Mate its very simple.

1.) Pick up the stinger missile.

2.) Right click and aim at the helicopter, keep tracking it as it moves.

3.) A sound will play in the form of a beep to indicate when you have a lock.

4.) When this happens press fire (default: left click on PC).

5.) Go back into the barn and reload the stinger since it takes TWO shots to take down the helicopter.

6.) Go back outside and repeat steps 1-4.

Use the right-mouse click,then keep pointing at the helicopter,until you here a sound.Then press the left-mouse click.

This is easy all you need to do is press the left trigger and keep the crosshairs lined up on the helicopter after awhile you should hear a series of beeps and then you will hear one large one and the controller will vibrate then pull the trigger and watch but the first rocket will not work if you are talking about the "hunted" level and then you will have to repeat the process and you should get the chopper the second time.

You hold the aim button ( Left Trigger ) and aim at the chopper until the beeping stops and the red crosshairs turn green. Then shoot.