Trump skips joining Biden, other former presidents at official 9/11 memorial ceremonies

During an unannounced stop at a Shanksville fire department, Biden praised Bush for encouraging American unity in his speech. He also defended his administration's handling of the withdrawal from Afghanistan in brief remarks to the press pool.

Biden's last stop in the day was the National 9/11 Pentagon Memorial, where he attended a wreath-laying ceremony along with first lady Jill Biden, Vice President Kamala Harris, Defense Secretary Lloyd Austin and Gen. Mark Milley, chairman of the Joint Chiefs of Staff.

Biden did not deliver formal remarks on Saturday but released a video statement on Friday recognizing the lives lost in the deadliest attack in US history and calling for national unity.