Well, the Iowa did finally get a load of deactivated rounds. The hard part was transportation. It used three railroads and two truck companies.
But your message above indicates that the remaining rounds are still loaded and active. The BLP's (inert practice rounds) are no problem, most of them do not have a tracer cartridge in them. But it's the others that is the problem. You need more than just ordinary explosive technicians but those who know the interior design of each type of round, where and what kind of fuses are used (and how to safely remove them) and how to take the explosive materials out whether it be Explosive D or 400 Bouncing Betty Grenades. AND you have to have the proper equipment and be far enough away from any civilization that could be victims of Murphy's First Law (If ANYTHING could POSSIBLY go wrong -- IT WILL).
To my limited knowledge only Crane and Aberdeen have the proper personnel and equipment. But then, who is going to pay for the transport and the deactivations?