President Joe Biden, congressional leaders and members of the US Capitol Police will attend a ceremony for fallen Capitol Police Officer William "Billy" Evans, who will lie in honor in the Capitol Rotunda on April 13.
Mandatory Credit:	Sarah Silbiger/Getty Images

President Joe Biden, congressional leaders and members of the US Capitol Police will attend a ceremony for fallen Capitol Police Officer William "Billy" Evans, who will lie in honor in the Capitol Rotunda on April 13.
Mandatory Credit: Sarah Silbiger/Getty Images

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Biden mourns slain Capitol Police officer: He 'was a hero'

President Joe Biden paid a personal tribute to fallen Capitol Police Officer William "Billy" Evans during a service at the US Capitol on Tuesday in which he praised the officer for his service and offered words of comfort to his family.