ATLANTA (AP) — If disaster strikes a nuclear power plant in the U.S., the utility industry wants the ability to fly in heavy-duty equipment that could avert a meltdown.

That capability is part of a larger industry plan being developed to meet new rules that emerged since a 2011 tsunami struck the Fukushima Dai-ichi nuclear plant in Japan, flooding its emergency equipment and causing nuclear meltdowns that sent radiation leaking into the environment. The tsunami exceeded the worst-case scenario the plant was designed to withstand, and it showed how an extreme, widespread disaster can complicate emergency plans.