Dozens of volunteers were scrubbing headstones at Leavenworth National Cemetery on Thursday, marking the 24th anniversary of the terrorist attacks on America. One of the veterans buried at the cemetery is Kansas City native Denease Renae Conley. A U.S. Navy veteran, Conley was a security guard at the north tower of the World Trade Center when it collapsed: https://www.kmbc.com/article/leavenworth-volunteers-honor-911-victims-headstones/66057028 | KMBC 9