COLORADO SPRINGS, Colo. (AP) — President Joe Biden on Thursday thanked U.S. Air Force Academy graduates for choosing “service over self†but said they now have the “great privilege†of leading in a world that will only get more confusing in the years to come. His appearance was punctuated by a stumble onstage after handing out diplomas to graduates.

“Graduates, you made a noble choice to lead a life of service,†Biden told more than 900 cadets in remarks on the sun-splashed field at Falcon Stadium in Colorado. “Now you also shoulder a great privilege and a mighty responsibility. Leadership, yeah leadership.â€

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