Article Photos: Oklahoma City mayor says 12,000 to 13,000 homes damaged or destroyed by May 20 tornado 218/564

Plaza Towers 3rd-grade teacher Pam Daniel, back, hugs substitute teacher Michelle Gonzalez during a meet and greet with teachers and students from Plaza Towers Elementary at Eastlake Elementary School in Oklahoma City, Thursday, May 23, 2013. Seven Plaza Towers students died when a tornado destroyed the school in Moore, Okla., on Monday. Daniel is retiring at the end of this school year and has been off on sick leave for the last 3 weeks. Gonzalez has been substituting Daniel's class and was with her students during the tornado. Photo by Nate Billings, The Oklahoman