Thursday's stunning events — Hur's description of Biden in the report, then Biden's shaky press conference — alarmed many senior Democrats, including former aides to Biden.

• Some acknowledged that the report and Biden's appearance afterward could fuel doubts about his chance of being re-elected, and then serving as president until he's 86.
• One House Democrat called Biden's verbal slip-ups "awful," and wondered why the president's staff allowed him to hold a press conference — then field reporters' shouted questions — "that late at night after a full day," instead of Friday morning, when he'd be "fresh."
• Another former Biden White House official simply said: "Brutal."