In Need Of Serious Help!

I have been working on this game cause it’s due in my multimedia class in about 2 weeks, and there is a major problem… the bullet follows the turret whenever you rotate it or move the tank, and i have tried duplicate movie clip over and over but it doesnt work so can someone please help me?

NOTE:
Player 1 keys are
arrow keys to move
shift to shoot (might be control not sure)
pgup/pgdn to rotate turret

Player 2 keys are
WASD to move
Q+E rotate turret
Control shoots (might be shift not sure)

Here is the file