PBS’ NATIONAL MEMORIAL DAY CONCERT announced today that Tony-nominated actress and star of TV’s THE KIDS ARE ALRIGHT,  Mary McCormack will be joining Tony Award-winner and long-time concert host Joe Mantegna to co-host the multi-award winning live show for its 30th-anniversary broadcast,  Sunday, May 26th.  Also added to the lineup, AMERICAN IDOL Season 17 finalist Alyssa Raghu joins the show for a special performance of the “National Anthem.”