Article Photos: Oklahoma tornadoes: Memorial service set for Oklahoma tornado victims 67/477

Twyla Walters, RN at Integris Southwest Medical Center, working at the physician-nurse work station at Integris Southwest Medical Center in Oklahoma City Thursday, May 23, 2013. Walters talked about losing her home in Monday's tornado and staying at the hospital to treat the victims being brought it at Integris Southwest Medical Center.  Photo by Paul B. Southerland, The Oklahoman