New York, Sept. 12 -- People who were too young on 9/11 to even remember their lost loved ones, and others for whom the grief is still raw, paid tribute with wreath-layings and the solemn roll call of the dead Wednesday as America marked the 18th anniversary of the worst terror attack on U.S. soil.

"Eighteen years. We will not forget. We cannot forget," Bud Salter, who lost his sister, Catherine, said at ground zero.

President Donald Trump laid a wreath at the Pentagon, telling victims' relatives: "This is your anniversary of personal and permanent loss."

"It's the day that has replayed in your memory a thousand times over. The last kiss. The last phone call. The last time hearing those precious words, 'I love you,'" the president said...