Photo Gallery: May 20 Tornado 20/20

Mikki Davis kneels at the cross for her son Kyle during a candle light vigil at the Plaza Towers Elementary grounds in Moore, Okla. on Wednesday, Nov. 20, 2013. Family and friends gathered for a six month memorial of the May 20th tornado that killed seven student at the school.  Photo by Chris Landsberger, The Oklahoman