JACKSONVILLE, Fla. (May 26, 2022) Master-at-Arms 3rd Class Mayra Solis places a flag on a grave at the Jacksonville National Cemetery in preparation for Memorial Day. Military personnel and civilians gathered to place approximately 22,000 flags in preparation for a Memorial Day observance ceremony. The United States National Cemetery System is a system of 172 cemeteries in the United States and its territories. (U.S. Navy photo by Mass Communication Specialist 2nd Class Zachary D. Behrend)