Dinora Lopez Miranda, 87, grandmother of U.S. Army soldier Iván López, holds a picture of her grandchildren, Eliezer (from left), Ivanis, Ivan and Rickey, while speaking to journalists outside her home in Guayanilla, Puerto Rico. Ana Martinez/Reuters/Landov hide caption

itoggle caption Ana Martinez/Reuters/Landov

Bob Butler (left) and Bob Gordon paint crosses they placed in front of American flags at Central Christian Disciples of Christ church in the city of Killeen, Texas, which is home to Fort Hood. Joe Raedle/Getty Images hide caption

itoggle caption Joe Raedle/Getty Images

SPC Ivan Lopez is pictured in the Sinai Peninsula between 2007 and 2008 during his service with the 295th Infantry of the Puerto Rico National Guard in this undated handout photo. HANDOUT/Reuters/Landov hide caption

itoggle caption HANDOUT/Reuters/Landov

Sgt. First Class Erick Rodriguez stood guard at the entrance to Fort Hood as officials prepared to brief the news media about Wednesday's attack at the post. Erich Schlegel /Reuters/Landov hide caption

itoggle caption Erich Schlegel /Reuters/Landov

Nidal Hasan, seen here in 2010, has been sentenced to death for killing 13 people and wounding more than 30 more in a shooting rampage at Fort Hood, Texas, in 2009. Bell County Sheriff's Office handout/Getty Images hide caption

itoggle caption Bell County Sheriff's Office handout/Getty Images

Maj. Nidal Hasan faces 13 counts of premeditated murder and 32 counts of attempted murder for the November 2009 shootings at Fort Hood, Texas. Bell County Sheriff's Office/Reuters/Landov hide caption

itoggle caption Bell County Sheriff's Office/Reuters/Landov

Maj. Nidal Hasan faces 13 charges of murder and 32 of attempted murder for the November 2009 shootings at Fort Hood. A Muslim, he has refused a judge's order to shave his beard, though it violates Army regulations. Bell County Sheriff's Office/Reuters/Landov hide caption

itoggle caption Bell County Sheriff's Office/Reuters/Landov

Maj. Nidal Hasan faces 13 charges of murder and 32 of attempted murder for the November 2009 shootings at Fort Hood, Texas. Reuters/Landov hide caption

itoggle caption Reuters/Landov

Maj. Nidal Hasan faces 13 charges of murder and 32 of attempted murder for the November 2009 shootings at Fort Hood. A Muslim, he has refused a judge's order to shave his beard, though it violates Army regulations. The trial will proceed, however. Bell County Sheriff's Office/Reuters/Landov hide caption

itoggle caption Bell County Sheriff's Office/Reuters/Landov