The rocket and/or bomb sight is turned on in the training arena and can be turned on offline under arena settings. In other online arenas, the sight is disabled and you need to use the skills developed with its aid. There is a similar air to air sight.
Isn't this sort of information in a manual somewhere? I recently read an excellent thread by Fuzeman about ship gunnery. It was news to me and seemed like it should also be in some sort of manual.
Regards,
Malta