By Brandy McDonnellOklahoma native and Tony Award-winning Broadway Kelli O'Hara will be among the celebrities who appear on the star-studded "National Memorial Day Concert" that will air tonight on PBS. As previously reported, the "National Memorial Day Concert" airs on PBS from 7 to 8:30 tonight as well as to our troops serving around the world on the American Forces Network.Read more on NewsOK.com