By Bill O'Reilly

Bad things happen to good people all the time. Nobody knows why. It's just the way life is. Once again, we have mass murder in America and the killer is a young man who was simply out of his mind. It's nobody's fault. There is no policy deficit. It's just an atrocity that's impossible to explain.

This is the fifth time in 13 years that an American has committed mass murder. Columbine, Colorado -- April 20th, 1999 13 dead; 26 wounded after two students shot them down. Eric Harris and Dylan Klebold then committed suicide.

April 16th, 2007; a deranged man on the Virginia Tech campus kills 33 people including himself. No motive for the homicides.

November 5th, 2009; Army Major Nadal Hasan kills 13 Americans at Fort Hood, Texas. He's currently charged with premeditated murder. His trial will begin next year.

And finally January 8th, 2011 22-year-old Jared Loughner kills six, wounds 13 in Tucson, Arizona including Congresswoman Gabrielle Giffords. Loughner is currently in a Missouri prison awaiting trial on 49 felony counts.

And now, we have 24-year-old James Holmes from San Diego who allegedly killed 12 people, wounding 59 others in a Colorado movie theater. The crime took place in Aurora, a suburb of Denver, a place where I actually lived for two years. Aurora is a middle class neighborhood, just regular folks.

Colorado authorities are holding Holmes and there is no question he did it. So once again, we have a crazy guy causing a massive amount of pain and destruction. There is little else to say.

Fox News correspondent Jon Scott has the timeline.

(BEGIN VIDEOTAPE)

JON SCOTT, FOX NEWS CORRESPONDENT (voice-over): A little after midnight local time the wildly anticipated premier of "Batman: The Dark Knight Rises" begins.

UNIDENTIFIED FEMALE: All of a sudden I look to my right and there is this guy, you know, who is coming through this exit door to my right. And he looked like he was an actor or something you know he was just like a prop.

SCOTT: About 20 minutes later the shooter stands at the front of the theater wearing body armor and a gas mask. He is armed to the teeth with an assault rifle, shotgun and at least one Glock pistol.

First he sets off two devices which release some sort of irritant or smoke in the air. Then he opens fire.

UNIDENTIFIED FEMALE: Somebody is still shooting inside Theater Number Nine per an employee.

UNIDENTIFIED MALE: Somebody is spraying gas in here too.

SCOTT: For up to 20 minutes the shooter fires into the sold-out theater.

UNIDENTIFIED MALE: There was this one guy who is on all fours crawling. There was this girl splitting up blood. There were bullet holes in some people's backs and some people's arms.

UNIDENTIFIED MALE: The thing that affects me most is just seeing that young girl just laying there just shot. Like she was just a little kid still, you know. Like it is just not right.

SCOTT: 12:39 Local Time -- calls start coming in to police.

UNIDENTIFIED MALE: We may have a number of people dead inside the theater.

UNIDENTIFIED MALE: Ok. If they are dead just -- just leave them, we are in a mass casualty situation at this time.

SCOTT: Within two minutes police flood the scene. People covered in blood begin streaming out.

UNIDENTIFIED FEMALE: The first thing we see is a 13-14-year-old girl with a bullet wound in her leg and her stomach and probably her chest. And I think she was right there about to die.

SCOTT: Minutes later, police arrest 24-year-old James Holmes in the back of the theater. And once the sun comes up the rest of the country begins to learn of the horror. President Obama saying the government will do whatever is necessary to bring the shooter to justice.

BARACK OBAMA, PRESIDENT OF THE UNITED STATES: We're going to stand by our neighbors in Colorado during this extraordinarily difficult time.

SCOTT: Back in Colorado, cops say the motive is unclear and they are not looking for any other suspects.

UNIDENTIFIED MALE: We are confident that he acted alone. However, we will do a thorough investigation to be absolutely sure that that is the case.

(END VIDEOTAPE)

O'REILLY: And joining us now from the scene of the crime on the phone is Jon Scott. So you're a -- you're a Colorado native. Can you provide some perspective for us?

SCOTT (via telephone): Yes Bill. I am struck as I come out here. It's a crystal blue sky today. There's a light breeze blowing. It's warm. It's everybody -- it's what everybody comes to Colorado for. The fantastic weather, the outdoor scenery and the lifestyle.

Friendly people here and yet another one of these tragedies have happened just like it happened 13 years ago at Columbine.

O'REILLY: Now, is there a culture in Colorado that is casual about firearms because you know that's going to come up. When I lived there in the late 1970s everybody was outdoors. There is obviously a western tradition where everybody has access to guns. And this guy bought his guns legally I understand. But -- but -- but it -- people they respect firearms there. But it isn't difficult to get them?

SCOTT: Sure.

It is not difficult to get them and I think there is a respect and healthy kind of respect for firearms here. When I lived here in my early 20s I had a rifle rack in the back of my pickup and would, you know, go up in the mountains and plink with a .22.

O'REILLY: Right.

SCOTT: It's like common out here. This just seems to be the case of an individual who just snapped.

O'REILLY: Now, I don't know whether you can answer this question, but I haven't heard it addressed so I want to ask it. How do you get that kind of armament in a theater? I guess he had a back pack or something. But the guy has got full regalia. He's got three weapons. Two that are substantial, large -- all right. He's got tear gas canisters. How do you get that into a theater?

SCOTT: I think I can fill you in on that. You see he bought a ticket, came in dressed as a civilian and sat in the very front row. And then sometime after either the previews started or the film itself started he went through one of the fire escape exits that's actually located at the front of the theater behind the movie screen.