Christopher Krebs, recently ousted as director of the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency, is sworn in to testify last year on Capitol Hill.

Department of Homeland Security Cybersecurity and Infrastructure Security Agency Director Christopher Krebs is sworn in to testify on Capitol Hill in Washington, Wednesday, May 22, 2019, before the House Oversight and Reform National Security subcommittee hearing on “Securing U.S. Election Infrastructure and Protecting Political Discourse.” (AP Photo/Carolyn Kaster)