vs electric fence

We got to within thirty yards of the fence, and I paused. I lifted my staff, pointed it at the first sentry camera, and whispered, "Hexus."
I wasn't used to holding something as demanding as a veil in one hand while performing another working with the other - even such an easy spell as a technology hex. For a second, I thought I'd lose the veil, but then it stabilized again. The lights on the camera had gone out.
We moved around the perimeter while I hexed the other two cameras into useless junk, but just as I'd taken down camera number three, Susan gripped my arm and pointed. The foot patrol was moving by on their sweep.
"The dog will get our scent," Susan said.
Martin drew a short pistol from beneath his jacket, and screwed a silencer to its end.
"No," I half growled. I fished in the pocket of my duster and found the second potion I'd made while preparing for the trip. It was in a delicate, round globe of glass about as thick as a piece of paper. I flipped the globe toward the path of the oncoming dog and heard it break with a little crackle.
The two patrolmen and the dog went by the area where I'd left my surprise, and the dog snuffled the new scent with thorough interest. At a jerk of the lead, the dog hurried to catch up to the guards, and all three of them went by without so much as glancing at us.
"Dog'll have his senses of smell and hearing back in the morning," I murmured. "These guys are just doing a job. We aren't going to kill them for that."
Martin looked nonplussed. He kept the pistol in his hand.
We circled around to where the fence met the canyon wall, opposite the large parking lot. Susan got out a pair of wire cutters. She opened them and prepared to cut through when Martin snatched her wrist, preventing her from touching the fence. "Electricity," he whispered. "Dresden."
I grunted. Now that he'd pointed it out, I thought I could feel it, too - the almost inaudible hum of current on the move, making the hairs on my arms stand up. Hexing something with a microchip in it is simple. Impeding the flow of electricity through a conductive material is considerably more difficult. I pitched my best hex at the wiring where it connected to a power line and was rewarded with the sudden scent of burned rubber. Martin reached out and touched the fence with the back of his hand. No electricity burned him.
"All right," Susan whispered, as she began clipping us a way in, cutting a wire only when the gusting wind reached a crescendo and covered the sound of the clippers at work, then waiting for the next gust. "Where's that distraction?"


Changes Chapter 17, Page 155-156