Folks attending Friday’s Riverdale High School graduation ceremony, be prepared to see double - five times. Five sets of twins will be among the 234 seniors slated to walk across the stage at the Georgia dome to receive their high school diplomas. They are Raven and Kirstyn Miller; Jasmine and Briana Gaunt; Briana and Ashley Adair;, Kamhad and Kashad Magwood and Damidrick and Damitrious Cowser. The five sets of twins participated in several school organizations and activities together and played sports on the same teams. Riverdale’s ceremony will begin at 3:15 p.m. on Friday and is part of Operation Graduation, where eight Clayton County high school graduation ceremonies are held this week over three days at the Dome.