Living to 100 let Jimmy Carter fulfill his wish to vote for Democratic Vice President Kamala Harris against Republican Donald Trump.

The president-elect claimed it will mark the first-ever such occurrence, but U.S. flags previously flew at half-staff during Richard Nixon's 1973 inauguration

Flags will remain at half-mast and half-staff most of the month for Jimmy Carter's death. Jan. 9 will be a national day of mourning for his funeral.