Biden offers prayer to family of slain Capitol officer

William Evans, an 18-year veteran of the Capitol Police force and father of two young children, died in a hospital after he was struck by the vehicle on April 2.

His flag-draped casket sat in the middle of the rotunda surrounded by appropriately spaced rings of attendees, including members of Evans' family.

"My prayer for all of you is that a day will come when you have that memory and, I said, you smile before you bring a tear to your eyes," Biden said during the ceremony.