Board Thread:Speculation House/@comment-14640999-20140724024429/@comment-10390252-20140905200242

96.254.157.84 wrote: If the wire broke that easily, they would have never pulled down the Bullhead in Black and White. They're probably made of high-density steel or something stronger and enhanced by her aura.

I suspect that the wires are made of Plotinvulnerablium - a strange material of near-infinite tensile strength and toughness that breaks instantly when the story requires it.