May 30 (UPI) -- Former President Joe Biden made a public appearance Friday, his first since revealing his cancer diagnosis earlier this month. Biden, 82, delivered remarks at Veterans Memorial Park in New Castle, Del., during a Memorial Day event, which also marked the 10th anniversary of the death of his son Beau Biden . "This day is the 10th anniversary of the loss of my son Beau, who spent a year in Iraq. And to be honest, it's a hard day," the elder Biden told those in attendance Friday. "