PRESIDENT Joe Biden has bumped his head on Marine One right after suffering a hard fall at the Air Force Academy graduation. Biden, 80, was on hand to deliver remarks at Thursday's graduation ceremony, which had over 900 cadets in attendance. Secret Service agents and an Air Force officer rushed to his side to assist him as the president tried to get up. The president has a history of falling up the stairs of Air Force One. Most recently, Biden was caught on camera losing his footing while boarding Air Force One in March before regaining his balance and entering the plane's cabin.