The 13 people killed when an Army psychiatrist allegedly opened fire on fellow soldiers at Fort Hood, Texas, included several people who shared the same profession as the alleged shooter, a father of three with ties to Laos whose family had a history of military service, a civilian who had returned to work a week after suffering a heart attack, and a psychiatric nurse who arrived at Fort Hood a day before the shooting. Here is a look at some of the victims.

Pfc. Aaron Thomas Nemelka

Nemelka, 19, of the Salt Lake City suburb of West Jordan, Utah, chose to join the Army instead of going on a mission for The Church of Jesus Christ of Latter-day Saints, his uncle Christopher Nemelka said.

"As a person, Aaron was as soft and kind and as gentle as they come, a sweetheart," his uncle said. "What I loved about the kid was his independence of thought."

Aaron Nemelka was proud to serve and felt keenly the responsibility of representing his nation and his family, said another uncle, Michael Blades. Blades said several of Nemelka's relatives were in the military, including a grandfather who served in the Korean War and received a Purple Heart.

"He felt it was his duty to stand with them in defense of our country," Blades said.

Nemelka enjoyed soccer, bowling and snowboarding, and was an avid fan of the Utah Utes, he said.

The youngest of four children, Nemelka was scheduled to be deployed to Afghanistan in January, his family said in a statement. Nemelka had enlisted in the Army in October 2008, Utah National Guard Lt. Col. Lisa Olsen said.

Blades said Nemelka had a tremendous love for his family and a deep sense of duty.

"His mission is completed," Blades said, his voice breaking. "He now serves a higher calling in heaven."

Pfc. Michael Pearson

Pearson, 22, of the Chicago suburb of Bolingbrook, Ill., quit what he figured was a dead-end furniture company job to join the military about a year ago.

Pearson's mother, Sheryll Pearson, said the 2006 Bolingbrook High School graduate joined the military because he was eager to serve his country and broaden his horizons.

"He was the best son in the whole world," she said. "He was my best friend and I miss him."

His cousin, Mike Dostalek, showed reporters a poem Pearson wrote. "I look only to the future for wisdom. To rock back and forth in my wooden chair," the poem says.

At Pearson's family home Friday, a yellow ribbon was tied to a porch light and a sticker stamped with American flags on the front door read, "United we stand."