In this task, you are given news articles and you need to generate a highlight, i.e., a short summary, with a maximum length of 10 lines.
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Question: (CNN) -- One of the three guns Adam Lanza used to kill 20 children and six adults at an elementary school in Newtown, Connecticut, was a military-style semiautomatic rifle known as an AR-15. That surprised and shocked a lot of people unfamiliar with America's gun culture. They questioned why such weapons are available and why anyone would need them. "Personally I don't know how any ordinary citizen can justify owning an automatic or semiautomatic gun," writes CNN commenter Mark Smerkanich. "Can't we leave those guns to the trained military?" Self-described gun owner Julie Jones-Hawkins comments, "I ... fully support a ban on rapid-fire weapons. Any weapon that can take out an entire kindergarten class is a problem." Here are five reasons many gun owners say they want military style rifles: . 'Some people play golf, others bowl. I shoot' "Every month or so I take my guns out to the range and shoot. It's thrilling, exciting and a great way to vent," says Christopher L. Kirkman, a Florida-based military-style gun owner. Kirman was one of more than 100 gun enthusiasts who shared opinions on CNN iReport about owning firearms that would have been banned under the now-expired 1994 federal weapons ban. "Sure, I could try to say that the reason I own these guns is self-defense, but the truth of the matter is that, although they will technically serve this purpose, they are not why I own them," he says. Michigan gun owner Ethan Daniels describes his enthusiasm for his rifle more succinctly, saying, "I like to shoot, and that is one heck of a fun carbine to plink with." iReport: Tell us why you own your military-style weapon . Background can factor into a gun owner's choice of weapon. "The AR-15 is what I am used to from my extensive training as an airborne infantryman," writes Nathan Lee. "Because of my training, it's what I feel the most comfortable with." Another reason for these guns is hunting. The AR-15 is a "good hunting platform. I've hunted coyote with it," says CNN iReporter MVR155, who owns two of the weapons. He asked to remain anonymous. Owners of military-style rifles also use them to hunt deer and other game. But some states have banned the AR-15 and its .223 caliber for deer hunting. Related: Newtown shooter's guns: What we know . 'It's cool' It may not be the best or most important reason, but military-style weapons often appeal to the enthusiast side of the American gun owner. Just like many car lovers who dream of owning a Lamborghini, many gun owners get excited about the idea of owning an AR-15. "There are people who buy certain types of firearms because they have a certain image -- the AR-15 is one of them," says Austin Nikel, a former AR-15 owner in Boulder, Colorado. "One thing about this country is how Hollywood has glorified the image behind those certain types of weapons. A lot of guys grow up with GI Joe, and that image is extremely attractive. It grabs you and affects you. "A lot of people buy the AR-15 because, well, it's cool." Apparently it wasn't cool enough for Nikel to hold on to. He ended up selling his AR-15 to his father. iReport: Why some own military-style weapons . 'A part of history' "Since coming of age -- and in the decades since -- I have collected many different firearms, some of them historical pieces, some for sport, some of them even the so-called 'assault weapons' that are now a controversy," says iReporter Hrothgar01. "Guns like these are as much a part of the history of this country as the muskets carried by pioneers, the rifles toted by doughboys in the trenches, and the other arms that have served and protected throughout the years. To hold one in your hands, appreciate its history and design, and to be able to take that piece of history to the range and work -- it is a feeling that many people in this debate do not understand or appreciate." Related story: By the numbers: Guns in America . 'Protecting my family' "I believe the foremost person responsible for protecting my family and myself is me," writes iReporter ShortyDoowap, who owns a pair of AR-15s. "These rifles provide me with the tools to perform that duty. I don't own these guns to target shoot, though I do that with them. I don't hunt with them, though I could in a pinch." Parks says he "would not hesitate to use one to simply defend my home and family from a single intruder if it became necessary." Related: Parents defend right to keep guns in the home . In some home-protection situations, fans say military-style rifles are generally more accurate than handguns. Rifles are generally easier to learn how to shoot, say military-style rifle owners. Like most firearms, military-style weapons such as the AR-15 are semiautomatic -- increasing protection because the shooter can fire off many shots without having to manually chamber a new bullet. With a bolt-action rifle or pump-action shotgun, firing multiple shots takes more time. "When you weigh it all out, these types of guns are stigmatized," says iReporter MVR155. Military-style weapons look more dangerous than other guns, he says, but really, there are many weapons available which are just as lethal, but which are not designed in a military style. iReport: One gun owner's solution . 'Fascination with the Second Amendment' "I am a proud owner of an AK-47," writes iReporter INGunOwner. "It's a terrific gun. Lots of fun to shoot. I own an AK because of my fascination with the Second Amendment, which I view as a backstop protector of freedom. Many people would argue that we have no use for it today because the government is trustworthy. "However since it acts as a deterrent, we can never measure exactly how much it has been effective. Perhaps the notion that people feel safe with our government after over 200 years is a testament to the Second Amendment value in balancing power with the citizens." Related: Gun owners fear new legislation could tread on their rights . CNN's Henry Hanks contributed to this report.

Answer: A military-style rifle was used in the Newtown, Connecticut, school shooting .
"Can't we leave those guns to the trained military?" asks a CNN commenter .
Many gun owners collect them, using them for hunting, target shooting and protection .
"A lot of people buy the AR-15 because, well, it's cool," says a former owner .


Question: Venice, Louisiana (CNN) -- A history of slipshod inspections is at least partly to blame for the disaster that destroyed the drill rig Deepwater Horizon and unleashed the worst oil spill in U.S. history, a former Interior Department official says. Bobby Maxwell worked for 22 years as an auditor and audit supervisor for the Minerals Management Service, and he said the disaster would not have happened if inspectors had done their jobs. But he said a "culture of corruption" enveloped the agency, "and it permeated the whole agency, both the revenue and the inspection side." The Minerals Management Service, a division of the Interior Department, is the primary federal agency that conducts safety inspections and collects revenue on the more than 3,500 oil wells in the Gulf of Mexico. Before leaving the agency in 2006, he supervised more than 100 auditors, who dig through oil company documents to make sure the federal government is getting all the royalties it's owed. He won an award from his bosses at the Interior Department. And although not an engineer by training, he spent a great deal of time on offshore rigs, many times working alongside Minerals Management Service inspectors. But he said that the agency was badly flawed and that investigators looking into the explosion that killed 11 workers aboard the rig in April should be asking questions about how those inspections were conducted. "What types of inspections? Who did them? Did they give them any waivers? Was the equipment adequate? Did they think they needed a second blowout preventer? Did they demand BP put it in? MMS is responsible for that, too," he said. As an auditor, Maxwell said, he was flown to offshore oil rigs routinely, sometimes in the company of Minerals Management Service inspectors. He says that when he was present, agency inspectors he saw were doing little real work. "It seemed like a formal process they would go through," he said. "We showed up on the rig. They had a checklist they would run through quickly, check things off, say things like 'Hi, Joe. Hi, John. See you at this weekend's fishing tournament.' " In May, an inspector general's report on the Minerals Management Service office in Lake Charles, Louisiana, sharply criticized a "widespread" culture of taking gifts from industry officials before 2007. Many of the inspectors joined the agency from the industry and had relationships with people in the business that originated "well before they took their jobs with industry or government," the report states. Inspectors got paid meals and tickets to sporting events from companies they monitored; let oil and gas company workers fill out their inspection forms in pencil, with the inspectors writing over those entries in ink before turning them in; and in 2008, one conducted inspections of four offshore platforms while negotiating a job with the company that operated them, the report found. And a 2008 inspector general's report found that regulators in the agency's Denver, Colorado, office received improper gifts from energy industry representatives and engaged in illegal drug use and inappropriate sexual relations with them. Maxwell worked out of the Denver office during that period and traveled to the Gulf region frequently. He is now in the fifth year of a whistleblower lawsuit he filed against the Kerr-McGee Oil Co., claiming that the firm cheated the Interior Department and the U.S. Treasury out of tens of millions of dollars in revenue from the company's oil concessions in the Gulf. The company, which has since been acquired by Anadarko Petroleum, denies the accusations. A federal judge in Denver is hearing that lawsuit, and should he win, Maxwell will stand to gain about $6 million in whistleblower fees. Interior Secretary Ken Salazar has publicly criticized some Minerals Management Service inspectors, saying they had a "cozy relationship" with oil company executives and workers. He has announced plans to split the agency into separate energy development, enforcement and revenue collection divisions, saying they have conflicting missions. In a statement issued to CNN, the Interior Department says that real change -- "systemic and not cosmetic" -- is coming to the service. Salazar "is well aware that we need to clean up the troubled agency," the department said. But Maxwell said that even if the agency is split up, it won't make much of a real difference. "You still have the same people," he said. "If you had people issues with the corruption and jobs not being done, you still have the same people in the name of a new agency. So those people may not be changing what they are doing. Therefore, you have the old agency with the new name, with the same corruption." Maxwell says he decided to speak out because he was "tired of seeing us not being able to do the job we were hired to do." He says he is both angry and heartbroken over the damage done to the marshlands, the water and to the economy of the Gulf states, especially Louisiana. "The only way to potentially change it is to stand up and be recognized and tell what was happening," he said.

Answer: Bobby Maxwell spent 22 years at Minerals Management Service .
Maxwell, who routinely visited offshore rigs, says inspectors did little real work .
He described agency as "a culture of corruption" during his tenure .


Question: (CNN) -- Boeing resumed testing Monday of its 787 Dreamliner in an effort to receive certification from the Federal Aviation Administration, a company spokeswoman said. The certification tests come two months after a fire on board one of the planes caused a power failure during a test flight. Boeing halted tests after the November 9 incident. Boeing resumed in-house testing of the jet on December 23, and the FAA certification tests began Monday, said Boeing spokeswoman Lori Gunter. Once the plane meets FAA approval, Boeing can begin filling orders for nearly 900 jets from around the world. The Dreamliner is Boeing's next-generation passenger jet. It is touted as a highly fuel-efficient aircraft made largely with composite materials. Boeing suspended test flights after the fire during a flight near Laredo, Texas, in November. The crew used backup systems to land the aircraft. Engineers determined the problem started as a short circuit or an electrical arc in a power distribution panel, most likely caused by foreign debris, Boeing said.

Answer:
A fire on board one of the planes causes a power failure during a test flight .
Tests are halted after the incident .
Once the plane meets FAA approval, Boeing can begin filling orders .
The Dreamliner is Boeing's next-generation passenger jet .