Columbine Survivors

Columbine High School students head for the school entrance, Aug. 16, 1999, in Littleton, Colo., returning for the first time since the April 20 shooting spree.

Richard Castaldo of Littleton, Colo., waves an Italian flag as his father, Rick Castaldo, center, and New York Mayor Rudolph Giuliani, right, accompany him up New York's Fifth Avenue at the head of the city's 55th annual Columbus Day Parade Oct. 11, 1999. Castaldo, who was paralyzed during the Columbine High School shooting in April, has received a full college scholarship from the Columbus Citizens Foundation.

Richard Castaldo and his father, Rick, head to the cafeteria for lunch at Craig Hospital in Englewood, Colo., in this file photo taken Aug. 4, 1999. Richard Castaldo was one of the first students shot at Columbine High School, and the last one to leave the hospital

Sean Graves, center, cuts the ribbon to welcome reporters and photographers into his parents' home that has been modified to be accessible to wheelchairs Aug. 26, 1999, in Littleton, Colo.

Sean Graves, shown in Littleton, Colo., April 1, 2004, talks about being shot during the Columbine High massacre in April 1999. The attack remains the deadliest school shooting in U.S. history.

Columbine High School senior Lisa Kreutz, in wheelchair, is presented her diploma by school administrator Barb Monseu, left, during graduation at Greenwood Village, Colo., May 22, 1999. Kreutz was shot during the shooting rampage at the school on April 20. Her parents, Sheryl and Ken Kreutz, are pictured at right.

Pat Ireland, 17, is all smiles at a news conference at Craig Hospital in Denver May 7, 1999, as he talks about his recovery. Ireland was shot in the head and foot during the shootings at Columbine High School. He escaped the school by tumbling out of the second floor window of the library into the arms of a SWAT team member.

Pat Ireland heads back to class Aug. 16, 1999, in Littleton, Colo.

Patrick Ireland, left, one of the shooting victims in the massacre in Columbine High School, gets an autograph from Canadian pop diva Celine Dion after her performance in Denver Oct. 2, 1999. Several Columbine students were invited to meet Dion after her concert.

Mack Taylor, who was shot during the Columbine High School massacre, talks to the media at the Jefferson County Fairgrounds in Lakewood, Colo., Feb. 25, 2004, after viewing evidence from the Columbine High School shooting. Family members of victims were permitted to look over evidence for the first time.

Kacey Ruegsegger, 17, is wheeled from a Denver hospital by Patty Anderson, center, after being released May 1, 1999. Walking beside her are her parents Greg, left, and Darcy, right. Kacey was shot in the shoulder during the shooting rampage at Columbine High School.

Shooting victim Austin Eubanks hugs his girlfriend during a community-wide memorial service in Littleton, Colo., April 25, 1999, for the vicitms of the shooting rampage at Columbine High School.

Columbine High School shooting victim Evan Todd shows classmate Heidi Johnson the Colorado Respect Life license plate at Denver International Airport, June 4, 2002. Todd and Johnson went to Erfurt, Germany, to talk with families of the victims of a school shooting there.

Columbine High School Art teacher Patti Nielson, left, talks to Rep. Carolyn McCarthy (D-NY) before a news conference on Capitol Hill April 5, 2000. Nielson was shot in the shoulder during the shooting spree at Columbine High School.