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.

Q: WASHINGTON (CNN) -- For years, retired Air Force Col. John Leech has had no desire to return to the Pentagon. Retired Col. John Leech narrowly escaped death at the Pentagon on September 11, 2001. Leech narrowly escaped death September 11, 2001, when a hijacked American Airlines jetliner hit the building. He will attend Thursday's dedication of the Pentagon memorial honoring the 184 people killed in the terror attack. In an earlier visit to the memorial, Leech left a note for his friend Navy Capt. Jack Punches: "Thanks Jack for serving and dying for our nation." Leech could barely contain his sadness recently as he watched a Department of Defense videotape showing the burned interior of the area in the building where he was that fateful morning. "Wow. My God. ... It makes you weak in the knees to see these pictures," Leech said. Leech, 54, recently took CNN into an office not far from the conference room where he was that morning. He has avoided touring the building since the attack but finally decided he was ready to "re-engage" with the past. In 2001, Leech was working as a Defense Department liaison officer to the White House Drug Policy office. He worked primarily out of the White House but attended meetings at the Pentagon every Tuesday and Thursday morning.  Watch as he returns to the crash site » . As he walked the now-renovated halls where he spent the morning of September 11, he recalled the horror of the day. The shock, he said, was indescribable. "It hit with such force. I had never experienced anything like it in my life. It rattled you right down to the bone," Leech said. Flight 77 slammed into the west wall of the Pentagon at 9:37 a.m. ET. Among the 184 people killed in the building and on the plane were a 3-year-old girl and a 71-year-old retired Navy captain, the youngest and oldest victims, who were both passengers on Flight 77.  A closer look at the new Pentagon memorial » . Several people were killed or severely burned not far from where Leech took cover. He remembers people screaming, "bloodcurdling screams." "I was so lucky. ... It was almost like we were in a protective cocoon," Leech recalled. "I mean, I inhaled a lot of jet fuel vapors, and I got dusted up, but that was the extent of my injuries." The married father of a 26-year-old woman remembers snaking his way outside the burning building, where in a stupor he noticed a comb that appeared to belong to a small child. "A little girl's comb that was untouched. It was not scorched; it didn't have smut on it," Leech remembered. "It was a pristine red comb sitting off the side, and next to it was a tattered suitcase, and I can remember looking at that and thinking, who did that belong to? What little girl did that belong to?" Leech served 28 years in the military and now works for the Department of Homeland Security but hopes to return one day to the Defense Department. Seven years after that horrible day, Leech visited the chapel at the new Pentagon Memorial, a two-acre park, which opens to the public Thursday. It was built at the spot where Flight 77 plowed into the Pentagon and will be open 24 hours a day, seven days a week. Thumbing through a condolence book in the chapel, he found the friend whom he was with that day, Navy Capt. Jack Punches. He wrote, "Thanks Jack for serving and dying for our nation -- John Leech." "I've avoided ... anything to do with 9/11, so it feels good to be here," he said. "I mean, a lot happened that day. A lot of good people died. A lot of very good people." CNN senior Pentagon correspondent Jamie McIntyre contributed to this story .

A: Retired Col. John Leech narrowly escaped death on September 11, 2001 .
Pentagon survivor recalls shock, terror of that terrible morning .
Fleeing for safety, he saw a little girl's red comb untouched near a tattered suitcase .
Watch 9/11 memorials in New York and Washington on CNN.com Live .
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Q: (CNN) -- Chester Nez, the former Marine and last of the original 29 Navajo code talkers, passed away June 4 at age 93. When an elder dies in Indian country -- especially someone as revered and decorated as Nez, the World War II veteran -- we, Native Americans, feel it, all of us, regardless of tribe or nation. We are also reminded that, not long ago, in the 19th and 20th centuries, Native American culture, including our languages, was considered a threat to U.S. national security. Then, the government worked in collusion with Christian institutions to stamp out Native American languages, including Navajo. "A great general has said that the only good Indian is a dead one," Capt. Richard Pratt famously read from a paper at an 1892 convention. "In a sense, I agree with the sentiment, but only in this: that all the Indian there is in the race should be dead. Kill the Indian in him, and save the man." Pratt was the founder of the Indian boarding schools, institutions charged with turning the "red Indian" into the "noble savage." Native Americans: We're not your mascots . Chester Nez attended one of these schools as a child, and was punished when he spoke Navajo. One can't help but think that, had it not been for the resilience of the Navajo people and their resistance to these early oppressive American policies, it's quite possible that World War II could have ended differently. Without the use of the Navajo language that was once discouraged by American policy, the U.S. military could have lost a distinct advantage over its enemy. Nez's death is a reminder that America's strength lies in its diversity. Native Americans, who have not always been included in the American story, should be remembered and honored for their contributions. Before the arrival of the Europeans, there were between 300 and 500 unique languages spoken throughout what is now the United States and Canada. Today, there are fewer than 200, and that number will continue to decrease if North American indigenous language revitalization efforts aren't considered paramount to the continuity of Native American communities by the United States. Opinion: NFL may throw flag on N-word, but what about the 'R-word'? Recently, a neighbor and I were discussing Native American languages. He was curious why more Native American elders "don't just pass on the language to the next generation." I told him that many of said elders still suffer from the trauma they experienced in the Christian boarding school system, and remembered what Ruby Left Hand Bull told me recently. "They'd pierce your tongue if you spoke your language!" my elder recalled. "Or they'd make you stand in front of the classroom and they'd tell you to stick your tongue out and then they'd whip it with a wooden ruler, just for speaking our language." Ruby knew our Lakota language growing up, she said, and very well. But she has lost it, she said. She understands it, but it's all but left her, courtesy of the boarding schools. I told my neighbor, who said he was a third-generation Italian-American, that his people's language could die in New York, but there is no threat that it will become an extinct language any time soon. "There are more Italians speaking Italian every day right across the Atlantic," I said. "You could board a plane or hop a ship today and travel to your home country and hear your people's language reverberating off Italian walls. We, Native Americans, don't share in that luxury. This is it. This is our home country. Our languages are invariably on the brink of extinction, especially since we are 1% of the population. So when a Native American language dies, it's forever gone." Our elders tell us that when a language dies, so, too, does the culture. But all is not lost. There are various campaigns to revitalize Native American languages. The state of Colorado, for example, passed a law stating that Native Americans who speak their language can teach it to students for credit at secondary schools under the category "World Languages." Maybe one day all Native Americans will, again, be fluent speakers of their language -- just like Chester Nez, the warrior. Indeed, the world would be a richer place for it. My hope is that when President Barack Obama visits with our Native American leaders this month at Standing Rock, North Dakota, he will be reminded of the significant contributions of Native American peoples like Chester Nez. The opinions expressed in this commentary are solely those of Simon Moya-Smith.

A: Simon Moya-Smith: The death of original code talker Chester Nez is a significant cultural loss .
Nez attended boarding schools that discouraged the use of his Navajo language .
Author: Native American elders say when a language dies, so does the culture .
Without the use of the Navajo language, the U.S. military could have lost a war, author says .
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Q: LONDON, England (CNN) -- In the developing world millions of people struggle to operate machinery, read from a blackboard, or just see the world around them, because they don't have access to the eyeglasses they need. Self-refraction glasses let the wearer adjust the lenses to suit their vision, without the need for an optometrist. But a pair of glasses developed by Joshua Silver, a physics professor at the University of Oxford, offers an affordable solution. The glasses can be adjusted to the right strength by the wearer without the need to visit an optometrist. A major reason for that is a chronic shortage of optometrists -- in Ghana, for example, there is just one for every eight million people. That makes it incredibly difficult for ordinary people to visit an optometrist, without which it's impossible for them to get glasses. But Silver thinks he may have come up with a solution to the problem. His self-refraction glasses mean people can correct their vision without needing an optometrist (see Fact Box). "Take a Sub-Saharan country where there is one optometrist for every million people; those people will never see an optometrist, so how will they get eyewear?," he told CNN. "Any model of delivery of vision correction in the developing world that depends on eye care professionals won't work. If you find a model that doesn't rely on them, then you potentially have a solution." Silver has been developing the glasses for over 20 years and continues to research the technology at the Center for Vision in the Developing World (CVDW) at the University of Oxford. He told CNN that about 80 percent of those who try the glasses are able to correct their vision, but there are limitations. They can't be used to correct astigmatism and it's not known if they are suitable for children, although the CVDW is currently running a study to determine if schoolchildren can correct their own vision with their teachers' help. So far, 30,000 pairs of self-refraction glasses have been distributed around the world, through an adult literacy program in Ghana and the U.S. Military Humanitarian and Civic Assistance (HCA) Program. The man behind the HCA program was Kevin White. He has now retired from the military and has set up Global Vision 2020 to distribute self-adjustable glasses. White has just returned from Liberia, where he trained 40 people from local NGOs to dispense the glasses. White sees charity organizations already working in developing countries as the key to distribution. "If I can train people from existing networks to dispense glasses, and they can spare one day each week or month to dispense the glasses, then they can see 50 to 100 people in a day -- and that's a way to reach a lot of people," White told CNN. But for the program to be sustainable, White says the next step is to train his dispensers to become trainers themselves, so that he builds a growing network of people in developing countries who can distribute the glasses. Silver estimates that one billion people in the developing world don't have access to the glasses they need, and he has said that he would like to see all of them wearing glasses by 2020. But he is under no illusions that he can do it alone. "No one person or company can possibly deliver that many glasses by 2020. There's a big infrastructure that needs to be set up to do that, and I'd like to see it happen," he told CNN. Distribution is one problem, cost is another. Currently, it cost $19 to manufacture a pair of self-refraction glasses, and Silver acknowledges that the price needs to come down to a few dollars a pair to make them affordable. Another issue is style. The glasses are currently functional, rather than fashionable, and that may limit their uptake, but more cosmetic versions are being developed. Silver says far more research is needed before those one billion people get their glasses, but he sees his self-refraction technology as a step toward that goal. He told CNN, "It's one of the world's largest problems. There's an immense amount of interest in solving it and self-refraction is one route that can assist with that."

A:
A lack of optometrists means many in the developing world can't get glasses .
Josh Silver has developed glasses with lenses that can be altered by the wearer .
The technology could be used to provide glasses for one billion people .
Global Vision 2020 is training charity workers to dispense the glasses .
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