PITTSBURGH (KDKA/AP) – Law enforcement in Oregon are asking people not to focus on the gunman, but the victims and heroes of a college massacre.

One of those heroes is an Army veteran who was shot seven times while running at the gunman.

Chris Mintz, 30, is a student at Umpqua Community College.

Mintz told his family he was trying to block a door to keep the gunman out when he was shot.

He says he looked up at the gunman and told him it was his son’s birthday, and that’s when the gunman shot him two more times.

His aunt said the gunman shot her nephew three times at the door. After Chris Mintz fell, he told the armed man, “It’s my son’s birthday today. Don’t do this.'”

Somehow Mintz survived and posted a picture of himself in his hospital bed on Facebook.

She said her nephew tried to crawl away but couldn’t move because of his wounds.

He was hit in both legs, his stomach, the back and in the hand, but the bullets did not hit any of his vital organs, she said.

He has two rods in his legs, she said, and is going to be in a wheelchair for the foreseeable future.

“It’s going to be a long, long recovery,” said Wanda Mintz.

There’s been an amazing outpouring of support for Mintz.

His cousin set up a GoFundMe account that is well over $300,000.

Chris Mintz was born and raised in Randelman, about an hour and a half west of Raleigh, North Carolina. His son, Tyrik, turned 6 on the day of the rampage, Wanda Mintz said.

Chris Mintz was in the Army, stationed at Fort Benning, Georgia, then moved about nine years ago to a base in the West. He never saw combat, his aunt said.

She said he’s an athlete and was studying body building and nutrition.

Chris Mintz left the military a few years ago and was a part-time student at Umpqua, she said.

Mike Gwaltney, a swim coach at the YMCA where Mintz worked, said he wasn’t surprised to hear how Mintz, a fellow veteran, reacted.

“It’s something that Chris and many others are trained to do,” he said. “He’s a pretty tough cookie.”

Gwaltney said he saw Mintz at the hospital as he was coming out of surgery.

“For the most part, he was in very good spirits,” Gwaltney said.

Brandon Polamalu, cousin of former Pittsburgh Steelers safety Troy Polamalu, was working at the school during the shooting.

Polamalu was inside Snyder Hall when the shooting took place but was not harmed.

One witness said the attacker demanded to know students’ religion before shooting them.

The 26-year-old gunman who opened fire an English class was an Army boot camp dropout who studied mass shooters before becoming one himself.

A day after the rampage in an Oregon timber town, authorities said Christopher Sean Harper-Mercer, who died during a shootout with police, wore a flak jacket and brought at least six guns and five ammunition magazines to the school. Investigators found another seven guns at the apartment he shared with his mother.

The weapons had all been purchased legally over the past three years, some by him, others by relatives, said Celinez Nunez, assistant field agent for the Seattle division of the Bureau of Alcohol, Tobacco and Firearms.

Those who knew the shooter described a deeply troubled loner.

At a different apartment complex where Harper-Mercer and his mother lived in Southern California, neighbors remembered a quiet and odd young man who rode a red bike everywhere.

Reina Webb, 19, said the man’s mother was friendly and often chatted with neighbors, but Harper-Mercer kept to himself. She said she occasionally heard him having temper tantrums in his apartment.

“He was kind of like a child so that’s why his tantrums would be like kind of weird. He’s a grown man. He shouldn’t be having a tantrum like a kid. That’s why I thought there was something – something was up,” she said.

Harper-Mercer’s social media profiles suggested he was fascinated by the Irish Republican Army, frustrated by traditional organized religion and that he tracked other mass shootings. In one post, he appeared to urge readers to watch the online footage of Vester Flanagan shooting two former colleagues live on TV in August in Virginia, noting “the more people you kill, the more you’re in the limelight.”

He may have even posted a warning. A message on 4chan – a forum where racist and misogynistic comments are frequent – warned of an impending attack, but it’s unclear if it came from Harper-Mercer.

“Some of you guys are alright. Don’t go to school tomorrow if you are in the northwest,” an anonymous poster wrote a day before the shootings.

On Thursday morning, he walked into Snyder Hall at Umpqua Community College and began firing, shooting a teacher and students, many repeatedly. Survivors described a classroom of carnage, and one said he ordered students to state their religion before shooting them.

Students in a classroom next door heard several shots, one right after the other, and their teacher told them to leave.

“We began to run,” student Hannah Miles said. “A lot of my classmates were going every which way. We started to run to the center of campus. And I turned around, and I saw students pouring out of the building.”

An aunt of an Army veteran hit by several bullets said he tried to stop the gunman from entering the classroom.

Wanda Mintz said her 30-year-old nephew, Chris Mintz, a student at the college, fell to the floor and asked the shooter to stop. But, she said, he shot Mintz again and went inside.

Portland Fire and Rescue Lt. Rich Chatman, who is serving as a spokesman for the criminal investigation, said investigators were still processing the crime scene.

“As you can imagine, there is a tremendous amount of information and evidence for them to sort through,” he said. “We have a very large team of investigators and forensic teams trying to process all of the information.”

Chatman said several hundred investigators are involved, ranging from federal agencies such as the FBI and ATF to state, county and city law enforcement.

Several years ago, Harper-Mercer moved to Winchester, Oregon, from Torrance, California, with his mother, a nurse named Laurel Harper. His father, Ian Mercer, originally from the United Kingdom, told reporters outside his Tarzana, California, home, “I’m just as shocked as anybody at what happened.”

At school in Oregon, “he was a typical Roseburg kid, kind of nerdy, kind of out there. Just himself,” said Alex Frier, a stage manager at the college who said Harper-Mercer built sets for theater performances last semester.

A neighbor, Bronte Harte, said Harper-Mercer “seemed really unfriendly” and would “sit by himself in the dark in the balcony with this little light.”

Harte said a woman she believed to be Mercer’s mother also lived upstairs and was “crying her eyes out” Thursday.

The Army said Harper-Mercer flunked out of basic training in 2008.

Army spokesman Lt. Col. Ben Garrett said Harper-Mercer was in the military for a little over a month at Ft. Jackson, South Carolina, but was discharged for failing to meet the minimum standards.

Garrett did not say which standards Harper-Mercer failed. Generally, the Army requires recruits to pass physical fitness tests and to be in generally good physical and mental health. Recruits must also pass a multiple-choice test covering science, math, reading comprehension and other topics.

In Washington, President Barack Obama lamented the government’s inability to pass stricter gun laws even after attacks like the one in Oregon.

At a news conference Friday at the White House, Obama said he plans to keep talking about the issue and “will politicize it” because inaction is itself a political decision the U.S. is making.

He said it’s impossible to identify mentally ill people likely to perpetrate mass shootings ahead of time. The only thing the U.S. can do, he explained, is ensure they don’t have an arsenal available “when something in them snaps.”

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