Workers place shirts on chairs before a memorial service for the victims of Saturday's shootings at McKale Memorial Center on the University of Arizona campus Wednesday, Jan. 12, 2011, in Tucson, ... more 
Workers place shirts on chairs before a memorial service for the victims of Saturday's shootings at McKale Memorial Center on the University of Arizona campus Wednesday, Jan. 12, 2011, in Tucson, Ariz. Searching for unity out of tragedy, President Barack Obama will honor the victims of the Arizona mass shooting in personal terms and remind those in grief that an entire nation is with them. The president is again stepping into his role as national consoler, a test of leadership that comes with the job. less 
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Associated Press | Photo By Chris Carlson
Wed, Jan 12, 2011 2:29 PM EST