President Joe Biden is "fine" after tripping and falling over at an event in Colorado, White House officials say. He stumbled on a sandbag while handing out diplomas at a graduation ceremony for the US Air Force Academy. Mr Biden, who is the nation's oldest serving president at 80, was helped back onto his feet and appeared to be unhurt after Thursday's fall. "I got sandbagged!" the president joked to reporters as he arrived back at the White House that evening. He had been standing for about an hour and a half to shake hands with each of the 921 graduating cadets. Footage shows Mr Biden appearing to point at one of two sandbags used to prop up his teleprompter as he was helped up by an Air Force official and two members of his Secret Service detail. Subscribe to the Evening Standard: https://bit.ly/Subscribe-to-Evening-Standard for latest breaking news from the UK, US and around the world, plus podcasts and features. Evening Standard on socials: Check out our full video catalog: null Videos, daily editorial and more: https://www.standard.co.uk/ Like us on Facebook: https://www.fb.com/eveningstandard Follow us on Twitter: https://twitter.com/eveningstandard and Instagram: https://www.instagram.com/evening.standard