For all the talk of arming teachers and deputies who may have failed to go into a school to stop a shooter, there are some cops who just do their jobs.

Among them, Montgomery County Police Officer Troy Melott.

Without a moment's hesitation, the school resource officer confronted an allegedly armed student at Clarksburg High School in Montgomery County the day after the massacre at the high school in Florida.

The officer is now speaking publicly for the first time.

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"I think about that every day when I come to school," he said about shooting sprees like the one at Marjorie Stoneman Douglas High School in Parkland, Fla.

In five years as a school resource officer, Melott said he has confiscated knives, scissors, and BB guns.

But this was the first time he'd had to pull a student out of class and grab a real gun.

"At any given time, it could happen in any school. But the fact of the matter is, I didn't think about it any differently than I did any other day," he said. "I did my job, just to make sure I could protect all the students I'm called to protect on my job."

With the flags already flying at half-staff for the victims of the shooting in Florida, a friend had come forward and said Alwin Chen -- an honors student who had allegedly been despondent and questioned his own sanity -- was armed.

"Myself and a security officer went and took him out of the classroom to the security office," said Melott.

Chen cooperated, and told Melott he had a gun in his backpack. It was a loaded, semi-automatic Glock.

It was not until he got home to his own family that Officer Molett really starting thinking about how wrong things could have gone.

"I went home and the faces I could see were the stu...not really students, but staff involved, security involved, and the emotions we all had," he said.

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Molett has been a cop for 29 years. He said he has a good relationship with the students. But investigators suspect Chen had been bringing a gun to school for months before another student finally told someone.

"Kids are kids, and sometimes kids don't say things to adults. I don't know why that is," said the school resource officer. "But on the day in question, we got the kid and located the weapon and the threat was over."

Chen is slated to go on trial later in the month. His lawyers insist he's a good kid a never threatened anyone.

Montgomery County has a school resource officer for every high school. Police are convinced they're making a difference.