Your number three story of 2009, not only rocked central Texas, but the tragedy was felt around the world.

In November, Army psychiatrist Nidal Malik Hasan allegedly opened fire at Fort Hood, killing 13 people and wounding 31 more.

It was one of the worst mass shootings ever to take place on an American military base.

"You don't expect your own battle buddies to turn around and do something like that to you after you go to war together," one solider said.

One of those killed in the attack called central Texas home. Mike Cahill, 62, of Cameron was a physician assistant at the post and the only civilian killed in the attack.

"He was very passionate about providing the right care to the soldiers and to his patients and he fought very hard for doing what was right for them," Mike's wife Jolene Cahill said. "Whether it was mental health or physical or whatever kind of medical treatment they needed he wanted that for them."

Around Texas and throughout the world people gathered to pray and show their support. A prayer vigil was held at Cain Park on the Texas A&M campus.

In Temple, Memorial Baptist Church, held a service for those in need of strength.

While others answered the call for help by rolling up their sleeves.

"Like most Americans I have a lot of family connections to the military," one donor said. "This is an incident that hits close to home, some way that I can help out and do my part."

Days after the shooting relatives of the 13 killed were front and center at a solemn memorial service at Fort Hood.

"Your loved ones endure through the life of our nation. Their memory will be honored in the places they lived and by the people they touched," President Barack Obaba said.

Meanwhile investigators tried to figure out why a soldier turned on his own..especially one trained to help others.

Former colleagues say Hasan was opposed to the wars in Iraq and Afghanistan and was angry about orders to deploy overseas.

The FBI says the 39-year-old Muslim was communicating over the internet with a radical muslim cleric who has ties to al Qaeda.

Hasan has been charged with 13 counts of premeditated murder and 32 counts of attempted murder. He'll be tried in a military court where he could face the death penalty.

Meanwhile, Fort Hood moves forward, coming to grips with the worst attack ever on a U-S military base.

Gunshot wounds left Hasan paralyzed from the waist down. He is being treated at San Antonio's Brooke Army Medical Center, but his attorney has filed a motion to have Hasan transferred to a hospital closer to his law office near Fort Hood.