catherine t. macarthur foundation, committed to building a more just, verdant and peaceful world. more information is available at macfound.org. additional support is provided by the park foundation dedicated to heightening public awareness of critical issues. the ford foundation, working with visionaries on the front lines of social change worldwide. at fordfoundation.org. the wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler. and additional support from koo and patricia yuen, through the yuen foundation. >> narrator: khalil al-dakhi is returning to his village in northern iraq eight months after isis overran the area. he is a yazidi, a religious minority targeted by isis. in august 2014, isis massacred hundreds of yazidi men. and as they stormed the region they took an estimated 3,000 women and children captive. (horns honking, men shouting) thousands of other yazidis who survived the isis rampage fled to the nearby sinjar mountain, where they remained stranded for weeks. (people conversing) >> narrator: khalil's whole village

catherine t. macarthur foundation, committed tod building a more just, verdant and peaceful world. working with visionaries on the front lines of social change worldwide. at fordfoundation.org. the wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler. captioned by media access group at wgbh access.wgbh.org >> for more on this and other frontline programs, visit our website at pbs.org/frontline. frontline's "drug lord: the legend of shorty" is available on dvd. to order, visit shoppbs.org or call 1-800-play-pbs. frontline is also available for download on itunes. "we are here tonight to explore tough issues." "you've gotta have people around you who aren't just laying rose petals in front of your way." "and i kid you not this is true." ♪ i don't ever want to let you down. ♪ "trust is everythi." ♪ i don't ever want to leave this town. ♪ "this has been so much fun." ♪ 'cause after all... ♪ "it's about reaching people." ♪ the city never sleeps at night. ♪ ♪ it's time to begin, isn't it? ♪ "there are more players on the world stage." ♪

catherine t. macarthur foundation, committed to building a more just, verdant and peaceful world. formation is available at macfound.org. additional support is provided by the park foundation dedicated to heightening public awareness of critical issues. the ford foundation, working with visionaries on the front lines of social change worldwide. at fordfoundation.org. the wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler. (door closes) (footsteps) (gun cocks) (gun cocks) (wind rustling) (insects chirring) ♪ ♪ >> guillermo galdos: the story goes that many years ago 20 men were sent to build the tunnel. >> (singing in spanish): >> galdos: here is where a legend was made. >> (singing): ♪ ♪ (singing continues) >> chapo guzmán, in my opinion is the most dangerous criminal in the world, second to none. >> (singing continues) >> joaquin guzmán loera, alias chapo guzmán, is attempting to avoid the most significant and persistent pursuit ever. (old tv theme music playing) >> galdos: joaquin guzmán, known as el chapo, or shorty, had been o

catherine t. macarthur foundation, committed to building a more just, verdant and peaceful world. more information is available at macfound.org. additional support is provided by the park foundation dedicated to heightening public awareness of critical issues. the ford foundation, working with visionaries on the front lines of social change worldwide. at fordfoundation.org. the wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler, and additional support from scott nathan and laura debonis. major funding for this program is provided by the kendeda fund. >> narrator: this is the story of three seemingly disconnected events beginning at the same time. what they each have in common is a type of infection that is becoming impossible to treat... a type of infection that has triggered deadly outbreaks, even at one of our most prestigious hospitals. it is a crisis that is spreading alarmingly fast, threatening everyone, even the healthy. (siren blaring) our first story starts in tucson, arizona, in may 2011. >> when i think about that tim

catherine t. macarthur foundation, committed to building a more just, verdant and peaceful world. more information is available at macfound.org. additional support is provided by the park foundation dedicated to heightening public awareness of critical issues. the ford foundation, working with visionaries on the front lines of social change worldwide. at fordfoundation.org. the wyncote foundati. and by the frontline journalism fund, with major support from jon and jo ann hagler. >> i am transgender. i was born male and identify as female. but i like to say that i'm a girl stuck in a boy's body. i transitioned when i was six or seven to more of a girl and now i'm comp... well, almost completely female. second grade was the last year of liam, and this year i changed my name officially. so i've changed my name, my clothes, my room, and my pronouns. and that's really all you need except for the fifth one that i still need: surgery and medicine to help me look like a girl. >> narrator: just a generation ago, it was adults, not children, who changed genders, usually late in life and oft

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world.information at macfound.org >> and with the ongoing support of these institutions and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: wall street battled bad news all day and ended with sizeable losses. a computer glitch that stopped trading for hours. the dow jones industrial average lost more than 260 points to close back near 17,500. the nasdaq fell nearly 90 points and the s&p 500 fell 35. >> ifill: microsoft announced today it's cutting another 7,800 jobs, or about 6% of its global work force. the cuts affect the company's struggling phone business. microsoft already cut 18,000 jobs in that sector as part of a major restructuring. >> woodruff: greece made a new financial bailout proposal today, in the face of a new deadline and a possible "grexit" -- a greek exit from the euro zone, the european monetary union. it came as greece's prime minister addressed the eu

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world.ation at macfound.org >> and with the ongoing support of these institutions >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: three top obama administration officials mounted their defense of the iran nuclear deal before a committee of skeptical senators. secretary of state john kerry challenged those who want to spike the deal by asking, "so what's your plan, totally go to war?" we'll show you some of the exchanges from the hearing right after this news summary. >> ifill: islamic state militants fired across the border from syria into turkey today, killing one soldier and wounding two others. turkish troops returned fire near the town of kilis, on the border with syria. it's a key transport point for both islamic state fighters and equipment. it comes just days after a suicide attack targeted young political activists in a southeastern turkish town, killing 32 people. >>

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> and with the ongoing support of these institutions and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the latest look at the job market shows progress is still coming in fits and starts. the labor department today reported a net gain of 223,000 jobs for june. in turn, the unemployment rate fell to 5.3%, the lowest in 7 years. that was largely because so many people gave up trying. the proportion of americans working or looking for work is now the smallest in 38 years. we'll focus on why that's the case, later in the program. wall street was unimpressed by the jobs report. the dow jones industrial average lost 28 points to close at 17,730. the nasdaq fell four points, and the s&p 5

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: the u.s. senate sent legislation to the president today authorizing a three-month patch to fund the nation's highways and transit systems. the highway trust fund was set to run dry on july 31. a bipartisan senate deal for a six-year funding bill made it through the senate this morning, but it has little support in the house. the co-sponsors of that bill were oklahoma republican jim inhofe and democrat barbara boxer of california. she laid blame on the house for leaving town without a long-term solution. >> they should have stayed another week. because there are several things they could do, one: they could write their own bill, two: they could take up our bill and three, they could do just a small bill and we could get to

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and by the alfred p. sloan foundation. supporting science, technology and improved economic performance and financial literacy in the 21st century. >> and with the ongoing support of these institutions and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: once again, members of the u.s. military have been killed in a barrage of gunfire, at their workplaces, on home soil. the targets today were in chattanooga, tennessee. it happened just after mid- morning: a car stopped and a man started shooting at a pair of military sites. >> he just pulled up and i didn't think anything of it. he had his drop top and he looked to the side and the next thing you know he lifted his arms like this with a big black gun. there was one shot and then it was endless shots. one after another. >> ifill: the first target was a military recruiting center. dozen

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world.information at macfound.org >> and with the ongoing support of these institutions and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the iranian nuclear weapons agreement dominated president obama's news conference today at the white house. he took on critics-- at home and abroad-- and appealed to congress for its support. we'll hear some of what he said- - and talk with members of congress-- after the news summary. >> ifill: the president also weighed in on bill cosby during the news conference. court documents now show the actor/comedian admitted he obtained quaaludes to drug women for sex. since that revelation, some have called for cosby's presidential medal of freedom to be revoked. mr. obama said there's no mechanism for revoking a medal of freedom, but he told reporters in the east room, the larger allegations are clear. >> if you give a woman or a man for th

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and by the alfred p. sloan foundation. supporting science, technology, and improved economic performance and financial literacy in the 21st century. >> and with the ongoing support of these institutions and foundations. and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: the latest deadline in the iran nuclear talks approached today, amid signs of discord. iran's state tv said negotiations are deadlocked because the u.s. won't respect iranian rights, especially on lifting sanctions. meanwhile, secretary of state john kerry talked of real progress, even as he warned the vienna talks are not open-ended. >> we are not going to sit at the negotiating table forever. we also recognize that we shouldn't get up and leave simply because the clock strikes midnight. and i emphasize, given that the work here is incredibly technical and the stake

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world.information at macfound.org >> and with the ongoing support of these institutions >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> ifill: a white police officer was indicted today for killing a black motorist during a traffic stop in cincinnati. ray tensing is accused of murdering the driver, samuel dubose, when he was pulled over near the university of cincinnati campus on july 19th, for not having a front license plate. tensing said he was dragged by the car and forced to shoot dubose. but footage from the body camera he was wearing revealed a different sequence of events as the car rolled away only after dubose was shot. we're not showing the moment the gun fired. after reviewing the video hamilton county prosecutor joe deters said there was no doubt in his mind it was murder. >> could you imagine the outrage you would have if this was your kid or brother? over a stop like this

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world.information at macfound.org >> and with the ongoing support of these institutions and... >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: the u.s. justice department has launched an investigation of major airlines and possible collusion to keep fares higher. the department confirmed the probe after the associated press reported it focuses on whether carriers have limited available seats. american airlines, delta,west and united now control more than 80% of all seats on domestic flights. the united states and cuba will reopen their embassies in each other's countries-- in havana and washington-- later this month for the first time in more than 50 years. president obama made the formal announcement this morning in the white house rose garden. he said both countries are "ready to move forward." >> instead of supporting democracy and opportunity for the cuban people, our eff

catherine t. macarthur foundation. committed to building a more just, verdant and peaceful world. more information at macfound.org >> and with the ongoing support of these institutions and individuals. >> this program was made possible by the corporation for public broadcasting. and by contributions to your pbs station from viewers like you. thank you. >> woodruff: police are searching for a motive, after last night's shooting at a louisiana movie theater. authorities say 59-year-old john russel houser killed two and injured nine others, before killing himself. court documents from years ago showed houser was mentally ill and prone to violence, to the extent he was hospitalized against his will and his wife hid his guns. we'll have more on the shooting- - plus a broader look at gun violence in america-- after the news summary. turkish fighter jets bombed islamic state targets in syria today, in retaliation for an isis attack on a turkish military outpost yesterday. it's the first time the country's military has engaged in direct combat with the militants. turkish forces also stepp