the heising-simons foundation, unlocking knowledge, opportunity, and possibilities. wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler. major support for "frontline" and for "inside yemen" was provided by the corporation for public broadcasting, with additional support from the henry luce foundation. corporate support is provided by: >> ♪ oooh >> us lives here. where we can be surprised by others. and ourselves. the y, for a better us. ♪ (radio chatter) (speaking foreign language): (distant rapid gunfire) (distant gunfire continues) (gunfire) (speaking foreign language): (loud gunshot) (gunshots, debris falling) (glass crunching) (distant rapid gunfire) (glass crunching) (clicking tongue) (distant shouting) (distant rapid gunfire) (gunshot) (rapid gunfire) (loud explosion, debris falling) (man shouting) (rapid gunfire) (man gasping) (radio chatter) (gasping) >> 13 years after the u.s. military invasion, the country still faces profound challenges, none more dire than the threat posed by the islamic state. (radio cha

the heising-simons foundation, unlocking knowledge, opportunity, and possibilities. more at hsfoundation.org. the wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler. ♪ >> he was always like in a plane going one place and the other. i was even surprised that he was going to kuala lumpur. because at the time i thought that he was in... in paris. ♪ >> narrator: it's 9:00 on the morning of february 13, 2017. (plane whirring) an ordinary-looking man arrives at kuala lumpur airport, terminal two. >> i mean basically it's a huge terminal. once you're inside it's like a maze. there's so many types of people from all walks of life. >> narrator: the man is checking in for an air asia flight to the chinese territory of macau. >> he went to one of those self check-in kiosks to get his boarding pass. that's when he was approached by the two ladies, they sort of flanked him from left and right. >> narrator: two women appear to bump into him. one appears to put a cloth over his mouth. then the women walk calmly off and no one else

the heising-simons foundation. unlocking knowledge, opportunity, and possibilities. re at hsfoundation.org. the wyncote foundation. and by the frontline journalism fund. with major support from jon and jo ann hagler. corporate support is provided by: ♪ >> us lives here. where we can be surprised by others. and ourselves. the y. for a better us. ♪ >> we are now only a few days away from electing the next president of the united states... >> ...turning its attention back to the election... >> ...with the election just days away... >> narrator: election day 2016. as americans headed to the polls, u.s. intelligence agencies were on high alert. >> ...making the urgent push to get out the vote. >> well, in the days before the election, there was constant interaction between the experts at c.i.a., fbi, and nsa. we were monitoring and using our collection capabilities to understand what the russians might have up their sleeve at the 11th hour. >> breaking news here: wikileaks is about to release "significant material tied to hillary clinton." >> the campaign is doing damage c

the heising-simons foundation, unlocking knowledge, opportunity, and possibilities. e wyncote foundation. and by the frontline journalism fund, with major support from jon and jo ann hagler. major support for this program is provided by the kendeda fund, investing in transformative leaders and ideas. corporate support for "frontline" is provided by: >> ♪ oooh >> us lives here. where we can be surprised by others. and ourselves. the y, for a better us. >> president trump getting ready to take a major swipe at former president barack obama's legacy on climate change. >> the president's executive order today calls for reviewing the clean power plan. >> according to epa administrator scott pruitt, the president's order will replace the obama plan with a pro-growth approach to regulation. (applause) >> narrator: two months after he became president, donald trump arrived at the environmental protection agency for a ceremony unlike anything the agency had ever seen. >> i want to acknowledge the truly amazing people behind me on this stage, our incredible coal miners. >> narr