[Jeff-Groves]

OK. So We are on the same page then.
One thing I see missing is

precond
{
Plane:CanFireCannons()
}

So not sure how the Strafe command will work with out that.

Now Strafe is listed as a valid command in the sim file.
No notes on the value after the call but I suspect a precentage of chance of firing.

You may need to set it like so,

precond
{
Plane:HasCannons(),
Plane:CanFireCannons()
}