 And so they were trying to figure out, like, what can we do with this? So first they tried to figure out, like, if we mess up the ion channels that are responsible for the current and everything during this wound healing process, do we undermine the wound healing process? And the answer is yes. And then they were like, well, how can we speed it up? Can we do the opposite? And so they started applying electrical stimulation, and they did find that that speeds up the rate of healing. And now DARPA...