Reba McEntire and Blake Shelton have added a May 25 concert in Durant, Okla., for local tornado relief. Their previously announced concert set for May 26 sold out in less than two hours on Friday morning (May 6). Both shows will take place at the Choctaw Casino Resort. As previously reported, proceeds will benefit storm victims in Atoka County. McEntire was born in Kiowa, Okla., about 30 miles away from the devastated area. Shelton was born in Ada, Okla., but now lives in Tishomingo, Okla., less than 50 miles from the county border. The storm destroyed many homes, businesses and schools. In addition, their fans can text OKGIVE to 27722 to make a one-time $10 donation, which will be added to their monthly cell phone bill. Checks may be sent to the Tushka Disaster Relief Fund at 101 SE 1st St., Tushka, OK 74525.