William “Billy” Evans

This image provided by the U.S. Capitol Police shows U.S. Capitol Police officer William “Billy” Evans, an 18-year veteran who was a member of the department’s first responders unit. Evans was killed Friday, April 2, 2021, after a man rammed a car into two officers at a barricade outside the U.S. Capitol and then emerged wielding a knife. (U.S. Capitol Police via AP)