Miley Cyrus is used to teary-eyed fans excited to see her, but the singer herself got weepy the day after Christmas when she and dad Billy Ray Cyrus visited NYC Fire Department Ladder Company 10, which lost four firefighters on 9/11, Us Weekly magazine is reporting."They were in tears once we told them what some of the guys went through," fireman Gary Kolsch tells Us Weekly in its latest issue, which is on newsstands now. Dad and daughter did manage to spread some holiday cheer: Billy Ray, 46, sang "Silent Night," and Miley, 15, signed autographs.The mood brightened even more the next day when Kolsch and his daughter went backstage at Miley's concert on Long Island – and the singer said hello. Kolsch tells Us Weekly, "My daughter is still talking about it!" What a nice gesture from Miley and her dad Billy Ray.