May 25, 2015 9:40 am WATCH: Old Guard Posts Arlington Flags Members of the 3rd U.S. Infantry, known as the Old Guard, describe placing hundreds of thousands of flags on graves in Arlington National Cemetery ahead of Memorial Day. Local 1:20 Gigi Hadid wows in sweeping Met Gala look 1:52 Amanda Seyfried reveals her kids' reaction to her daring metallic Met Gala look 1:34 Nicole Kidman floored over Olivia Rodrigo's AMC ad tribute 1:12 Ariana Grande channels Glinda at 2024 Met Gala 3:45 Gabrielle Union and Dwyane Wade's daughter had cutest reaction to mom's Met Gala dress