Policing expert on both the immediate and lingering security changes after Capitol riot Security experts say the way public events are held in Washington, D.C. and in state capitals across the country, have likely changed permanently. and last updated 2021-01-21 11:57:12-05 RICHMOND, Va. -- The way public events are held in Washington, D.C. and state capitals across the country has likely changed permanently, according to security expert Prof. William Pelfrey. In the aftermath of the January 6 assault on the U.S. Capitol, the physical changes like concrete barriers and fencing are obvious. "You can no longer drive around the Virginia Capitol,â Pelfrey, the Chair of the Homeland Security department at VCUâs Wilder School of Public Affairs, said. âThat is too bad, but those are the changes that have to happen as a result of security measures and security emplacement."