Dogfights Camera Shake

I'm trying to recreate the camera shake from the show Dogfights. When they do a fly-by shot, as soon as the aircraft passes the camera, the camera shakes. I'd like to use Millisecs() for this but I'm open to all options.

If KeyHit(57)
	shaking = True
	shake_strength# = 2.0
EndIf

If shake < 0
	shaking = False
        shake_strength = 0
EndIf

If shaking = True
	TurnEntity camera,Sin(MilliSecs() Mod 360) * shake_strength,Cos(MilliSecs() Mod 360) * shake_strength,0
	shake_strength = shake_strength - .9 * dt
EndIf

I need it to be more random (not circular) and slowly return to a steady state.