“Biden was mentally sharp, even if he appeared physically frail,” Chris Whipple wrote in The Fight of His Life, his 2023 book on the 46th president, who was then warming up his re-election bid at the age of 80.
In that book, Whipple quoted Bruce Reed, a senior aide, describing a long-distance flight. When others appeared exhausted, Biden was raring to go, Reed said. Biden showed “unbelievable stamina”.
