What they did was cut all the traffic to one lane, had about ten officers standing roadside, and would let through ten cars at a time. I stopped for the traffic at the very end of the group in front of me, then had to stop at the first officer in the line when I went through. I was happy to see that he didn't seem very comfortable being there, and did his best to get me on my way asap. Maybe he could sense that I wasn't happy about being stopped.