Beau died in 2015 after a battle with glioblastoma, an aggressive form of brain cancer. He was 46 years old. Aside from the heartwarming picture of Beau, Biden also put up more family photos and pictures with his wife, Dr. Jill Biden.
Meanwhile, an unknown man paid a touching tribute to Beau as Biden gave his inauguration speech in Washington, D.C. on Wednesday. In a now viral photo, a man in uniform silently knelt at Beau's grave at St. Joseph on the Brandywine church in Greenville, Delaware, throughout the duration of Biden's speech. The identity of the man, who was by himself, is not known.
"Because he asked me when he was dying, 'Promise me, Dad. … Promise me, you'll stay engaged," he shared. "He knew I'd take care of the family, but he worried what I would do is I would pull back and go into a shell and not do all the things I've done before. It took a long time for me to get to the point to realize that that purpose is the thing that would save me. And it has. And every morning I get up and I say to myself … I hope he's proud of me."