Zo starts back in surprise. "By the Force, what is this thing?"

One of his hands goes to the vibroknucklers out of habit, but then he pauses and his posture shifts to emulate that of the figure of light, drawing the lightsaber and thumbing the power button on it. He doesn't expect it to still hold a charge after all this time, but that's what the spirit did so he will try to communicate with it that way.