After the events in Butler, Pennsylvania, on July 13, the U.S. Secret Service has asked for changes to certain temporary flight restrictions surrounding the vice president and the presidential nominees from each political party.
Most pilots are familiar with the 3-nautical-mile radius TFRs frequently used to protect the vice president. These typically extended–from the surface to 2,999 feet agl. We commonly see these TFRs also used to protect the presidential nominees and vice president-elect during election season.
However, it should be noted that, while these are the standard dimensions, the Secret Service does occasionally ask for variations. For example, if there are going to be multiple 5-nm TFRs in a relatively small area, they may instead ask for a single 10-nm TFR to reduce complexity.
As always, it is incumbent on all pilots to thoroughly check notams before every flight. These TFRs often pop up and change with little notice, especially during campaign season. As a result, vigilance is highly recommended.