Betty Sprague planted flowers Saturday at the Pawtuxet Memorial Park grave of her late husband, Robert Sprague, who died in 2004. He served in Korea as a Sergeant First Class in the United States Air Force. In recognition of veterans buried at the park and in commemoration of Memorial Day, flags bearing the names of veterans lined the park streets. The Spragues’ son, Robert Sprague Jr., is a retired colonel in the U.S. Marine Corps.