Friends and family of Virginia Tech graduates make their way up a stair case passing by memorials for those killed in Squires Student Center on the campus of Virginia Tech in Blacksburg, Virginia May 12, 2007. Virginia Tech student Seung-Hui Cho killed 32 students and faculty members before killing himself on April 16 in the deadliest shooting in U.S. history. REUTERS/Chris Keane (UNITED STATES)