Dr. Matthew Strickland, a medical oncologist at Mass General Hospital, discusses the likely goals of adjuvant chemotherapy for Kate, Princess of Wales. In a statement, she described the treatment as “preventative chemotherapy” and Strickland said that likely means a treatment intended to clear out any cancer cells that may have been left behind after surgery.

President Joe Biden has scheduled a state funeral in Washington for former President Jimmy Carter on Jan. 9.

Biden also declared Jan. 9 as a National Day of Mourning across the U.S. Carter, the longest-lived former president, died Sunday at his home in Plains, Georgia. He was 100.

Video above: Hometown of Plains, Ga., remembers former President Jimmy Carter

Biden ordered U.S. flags to fly at half-staff for 30 days from Sunday.

Also on Sunday, Carter was honored with a moment of silence before the Atlanta Falcons’ game at the Washington Commanders, hours after the 39th president of the United States died.

Beyond being a Georgia native who led the country from the White House less than 8 miles away during his time in office from 1977-81, Carter was the first president to host the NFL’s Super Bowl champions there when he welcomed the Pittsburgh Steelers in 1980.

Falcons owner Arthur Blank, in a statement released by the team before kickoff, said he was deeply saddened by the loss of his dear friend and mentor, calling Carter “a great American, a proud Georgian and an inspirational global humanitarian.”

“He lived his life with great civic responsibility and took it upon himself to be the change he wished to see amongst others,” Blank said, recalling meeting Carter at The Home Depot. “President Carter’s kind and uniting spirit touched so many lives. He was a man of deep faith, and did everything with principle and grace, doing things the right way for the right reasons.”