Memorial Service For Tucson Shooting Victims (19 images)

President Barack Obama speaks at the event "Together We Thrive: Tucson and America" honoring the January 8 shooting victims at McKale Memorial Center on the University of Arizona campus on January 12, 2011 in Tucson, Arizona. The memorial service is in honor of victims of the mass shooting at a Safeway grocery store that killed six and injured at least 13 others, including U.S. Rep. Gabrielle Giffords (D-AZ), who remains in critical condition after being shot in the head. Among those killed were U.S. District Judge John Roll, 63; Giffords' director of community outreach, Gabe Zimmerman, 30; and 9-year-old Christina Taylor Green. UPI/Kevork Djansezian/Pool

Relatives and friends of Tucson shooting victims cry during the event "Together We Thrive: Tucson and America" honoring the January 8 shooting victims at McKale Memorial Center on the University of Arizona campus on January 12, 2011 in Tucson, Arizona. The memorial service is in honor of victims of the mass shooting at a Safeway grocery store that killed six and injured at least 13 others, including U.S. Rep. Gabrielle Giffords (D-AZ), who remains in critical condition after being shot in the head. Among those killed were U.S. District Judge John Roll, 63; Giffords' director of community outreach, Gabe Zimmerman, 30; and 9-year-old Christina Taylor Green. UPI/Kevork Djansezian/Pool

Fatal shooting victim Dorwin Stoddard's family hug at the event "Together We Thrive: Tucson and America" honoring the January 8 shooting victims at McKale Memorial Center on the University of Arizona campus on January 12, 2011 in Tucson, Arizona. The memorial service is in honor of victims of the mass shooting at a Safeway grocery store that killed six and injured at least 13 others, including U.S. Rep. Gabrielle Giffords (D-AZ), who remains in critical condition after being shot in the head. Among those killed were U.S. District Judge John Roll, 63; Giffords' director of community outreach, Gabe Zimmerman, 30; and 9-year-old Christina Taylor Green. UPI/Kevork Djansezian/Pool

U. S. President Barack Obama (L) hugs NASA astronaut Mark Kelly, husband of U.S. Rep. Gabrielle Giffords (D-AZ), as he arrives to attend the event "Together We Thrive: Tucson and America" honoring the January 8 shooting victims at McKale Memorial Center on the University of Arizona campus on January 12, 2011 in Tucson, Arizona. The memorial service is in honor of victims of the mass shooting at a Safeway grocery store that killed six and injured at least 13 others, including U.S. Rep. Gabrielle Giffords (D-AZ), who remains in critical condition after being shot in the head. Among those killed were U.S. District Judge John Roll, 63; Giffords' director of community outreach, Gabe Zimmerman, 30; and 9-year-old Christina Taylor Green. UPI/Kevork Djansezian/Pool