A Virginia Tech student stands by a cardboard "VT" that was part of a makeshift vigil placed on a drill field at Virginia Tech early Tuesday, April 17, 2007, in Blacksburg, Va., to honor the victims of the shootings on the campus Monday. A gunman killed 32 people at the school Monday in the deadliest shooting rampage in modern U.S. history.
Students gather in front of the War Memorial to mourn their fellow students and faculty members, Monday, April 16, 2007, in Blacksburg, Va.
Messages to the victims of the shooting at Virginia Tech are shown on a cardboard Virginia Tech Logo that was placed on the drill field on campus Monday, April 16, 2007, in Blacksburg, Va.
Jose Tores, right, and an unidentified Virginia Tech student try to light candles at a vigil in front of the War Memorial on the Virginia Tech campus Monday, April 16, 2007, in Blacksburg, Va. A gunman massacred 32 people at the school in the deadliest shooting rampage in modern U.S. history Monday, cutting down victims in two attacks two hours apart before the university could grasp what was happening and warn students.
Virginia Tech students gather in front of the War Memorial on campus in Blacksburg, Va., to mourn their fellow students and faculty members Monday, April 16, 2007. A gunman massacred 32 people at the schoolin the deadliest shooting rampage in modern U.S. history Monday.
Anthony Rose, Kevin Hock and Dillion Gabbert, from left, pray in the War Memorial chapel as they mourn their fellow students and faculty members, Monday, April 16, 2007, in Blacksburg, Va. A gunman killed 32 people at Virginia Tech Monday in the deadliest shooting rampage in modern U.S. history.
Unidentified students mourn the shootings near a campus chapel at Virginia Tech in Blacksburg, Va., Monday, April 16, 2007. Virginia Tech's president said Tuesday that a student was the gunman in at least the second of the two campus attacks that claimed 33 lives to become the deadliest shooting rampage in modern U.S. history.
Virginia Tech Corp of Cadets, Devan Vaughan, embraces Elizabeth Fonseca, from Richmond, Va., as John Pucikett, right walks by outside the War Memorial Chapel on the campus of Virginia Tech in Blacksburg, Va., Monday, April 16, 2007.
Students congregate at the War Memorial Chapel on the Virginia Tech campus for a vigil Monday April 16, 2007, in Blacksburg, Va.
Students light candles on campus as they mourn the shootings at Virginia Tech in Blacksburg, Va., Monday, April 16, 2007. A gunman massacred 32 people at Virginia Tech in the deadliest shooting rampage in modern U.S. history Monday.
Virginia Tech students visit a makeshift memorial to the 32 slain students on the campus of the school in Blacksburg, Va., Tuesday, April 17, 2007. Virginia Tech's president said Tuesday that a student was the gunman in at least the second of the two campus attacks that claimed 33 lives to become the deadliest shooting rampage in modern U.S. history.
A newspaper vending machine shows a headline of Monday's shooting as a security guard sits in his car outside Norris Hall on the campus of Virginia Tech University in Blacksburg, Va., Tuesday, April 17, 2007. A gunman killed some 30 students and others in the hall during a rampage on Monday that left a total of 33 dead.
Virginia Tech students Elisabeth Strawn, 24, from Blacksburg, Va., and Jeff Graham, 24, from Lusby, Md., sit in front of Norris Hall, the scene of the shootings at Virginia Tech in Blacksburg, Va., Tuesday, April 17, 2007.
Flags fly at half-staff in front of The Inn at Virginia Tech, in honor of those killed in the campus shootings, Monday, April 16, 2007, in Blacksburg, Va.
Virginia Tech sophomore Anne Carlisle Strole, 19, of Stanton, Va., wipes away tears Tuesday, April 17, 2007, after a memorial on campus near the drill field for the 32 students killed at Virginia Tech on Monday.
An unidentified attendee prays in the football stadium provided for overflow seating for the convocation attended by President Bush following the shootings on the Virginia Tech campus in Blacksburg, Va., Tuesday, April 17, 2007.
Students fight back tears while sitting inside the Virginia Tech football stadium during a memorial service a day after the worst shooting in modern U.S. history on Tuesday, April 17, 2007 in Blacksburg, Va.
President Bush bows his head during a convocation ceremony in honor of Virginia Tech massacre victims, Tuesday, April 17, 2007, in Blacksburg, Va.
Kris King sheds a tear during a convocation ceremony in honor of Virginia Tech massacre victims, Tuesday, April 17, 2007, in Blacksburg, Va.
Student Elizabeth Tosten, front left, 19, from Yorktown, Va., center, takes part in a candlelight vigil following the shootings on the Virginia Tech campus in Blacksburg, Va., Tuesday, April 17, 2007.