Article Photos: Oklahoma tornadoes: Two upgraded from EF-3 to EF-4 13/27

Walgreens volunteer Cassidy Climer swings an axe to break up a piece of roofing as she helps clean up debris and damage on Wednesday, May 12, 2010, in Oklahoma City, Okla. left behind by the tornados that hit central oklahoma on Monday. Photo by Chris Landsberger, The Oklahoman