The late Sen. John McCain, R-Ariz., returns to the U.S. Capitol one last time on Friday — where he will lie in state in the rotunda, an honor reserved for roughly only 30 other people since the practice began in 1852.

The Arizona Republican died Saturday at 81 and, after a funeral service in Phoenix on Thursday, his remains were transported to Washington, D.C. His casket will be positioned in the ornate hall, where lawmakers from both parties, top administration officials, military leaders and members of the public will line up to pay their respects. It will lie on top of the catafalque, the platform constructed for President Abraham Lincoln's casket, that has been used for all of the ceremonies in the rotunda since his memorial service. Approximately 15,000 showed up to mourn McCain at a similar service at the Arizona state capitol Wednesday.

The ceremony is set to begin at 11 a.m. and will be livestreamed.

President Trump will not make the short trip down Pennsylvania Avenue to participate in the ceremony marking the end of McCain's decades-long career in public service. His tense relationship with McCain continued even after the senator's death, when it took several hours for Trump to issue a proclamation lowering flags at federal buildings to half-staff until McCain's interment. Vice President Mike Pence will make remarks at the service in the Capitol, along with Senate Majority Leader Mitch McConnell, R-Ky. and House Speaker Paul Ryan, R-Wisc.. Then Pence, McConnell, Sen. Chuck Schumer, D-N.Y. and Ryan will present wreaths to represent the administration, Senate and the House.

The last person to lie in state in the U.S. Capitol was Hawaii Democratic Sen. Daniel Inouye in December 2012, who, like McCain, was a war hero, serving in World War II. He was also the second-longest serving senator in history.

Earlier this year, the late evangelist Billy Graham was "lain in honor" at the Capitol, a similar privilege allowed for citizens who are not military or government officials.

On Saturday morning a motorcade will bring McCain's casket to the Washington National Cathedral for a memorial service. On the way, his widow, Cindy, will stop at the Vietnam Veterans Memorial to present a wreath to remember all those who died in that war.

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