Joe Biden fell three times while climbing the stairs to Air Force One at Joint Base Andrews on Friday.
The stumbles happened just before noon when Mr. Biden, 78, was trying to jog up the steps to the aircraft for a flight to Atlanta.
After the first stumble, Biden, who has previously taunted former President Trump for lacking physical prowess, tried steady himself, but he fell a second time, and then a third time to his knees.
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