Article Photos: Oklahoma City mayor says 12,000 to 13,000 homes damaged or destroyed by May 20 tornado 21/564

David Wheeler and Karen Wheeler check text messages near SW 156th and Vicki while trying to locate David Wheeler's son and Karen Wheeler's nephew, Gabriel Wheeler, 9, after a tornado struck south Oklahoma City and Moore, Okla., Monday, May 20, 2013. Gabriel Wheeler is a student at Briarwood Elementary, which was destroyed by the tornado. Photo by Nate Billings, The Oklahoman