 for several blocks in many different directions, the idea to control the flow not only of traffic but of people, and that way they can also stop anybody from getting into certain pockets once the effects of the security perimeter go into effect overall. Now, we do expect many of the questions today to be about what has changed in the last 24 hours since the incident, the assassination attempt in Pennsylvania. But like we have heard from so many officials, they say they have been gearing up for this for more than a year, and they know what to expect.