<p>President Joe Biden tripped and fell after handing out the last diploma at a graduation ceremony at the U.S. Air Force Academy on Thursday.</p>.<p>The 80-year-old U.S. president quickly got up on one knee helped by three people and walked back to his seat unassisted.</p>.<p>As Biden was helped up, he pointed behind him, seeming to indicate what he tripped over.</p>.<p><strong>Also Read | </strong><a href="https://www.deccanherald.com/international/us-house-passes-debt-limit-bill-in-bipartisan-vote-to-avert-default-1223798.html" target="_blank"><strong>US House passes debt limit bill in bipartisan vote to avert default</strong></a><br /> </p>.<p>White House communications director Ben LaBolt said on Twitter that Biden was fine. "There was a sandbag on stage while he was shaking hands," he explained.</p>.<p>The fall came after Biden delivered a commencement address to a flag-waving audience where he warned graduates they will enter service in an increasingly unstable world, citing challenges from Russia and China.</p>.<p>Biden is running for re-election in 2024. Doctors declared him healthy and fit for duty after a physical examination in February.</p>
<p>President Joe Biden tripped and fell after handing out the last diploma at a graduation ceremony at the U.S. Air Force Academy on Thursday.</p>.<p>The 80-year-old U.S. president quickly got up on one knee helped by three people and walked back to his seat unassisted.</p>.<p>As Biden was helped up, he pointed behind him, seeming to indicate what he tripped over.</p>.<p><strong>Also Read | </strong><a href="https://www.deccanherald.com/international/us-house-passes-debt-limit-bill-in-bipartisan-vote-to-avert-default-1223798.html" target="_blank"><strong>US House passes debt limit bill in bipartisan vote to avert default</strong></a><br /> </p>.<p>White House communications director Ben LaBolt said on Twitter that Biden was fine. "There was a sandbag on stage while he was shaking hands," he explained.</p>.<p>The fall came after Biden delivered a commencement address to a flag-waving audience where he warned graduates they will enter service in an increasingly unstable world, citing challenges from Russia and China.</p>.<p>Biden is running for re-election in 2024. Doctors declared him healthy and fit for duty after a physical examination in February.</p>