charlie d'agata, cbs news, kabul, afghanistan. >> the 9/11 attacks ushered in a new era of security at airports. new facial technology is showing early signs of success, but there are critics. here's chris van cleave. >> reporter: in the last three weeks, new facial recognition technology at washington's dulles airport has caught two imposters trying to illegally enter the u.s. yesterday it was a woman from ghana with someone else's passport. last month with his real identification hidden in his shoe, a 26-year-old man from the republic of congo tried to enter with a french passport. >> we're using it for security purposes, to make sure visitors actually depart the country timely, but also trying to make sure we avoid any i am pos torz, someone using a document that doesn't belong to them to enter the u.s. >> reporter: customs border protection is testing the system at 17 airports nationwide. the technology takes a picture of the tropical storm laner and compares it against a database, pass tort or visa pictures belonging to people scheduled to fly that day. it is optional for u.s. cit

charlie d'agata is in kabul.r:h surge has arrived. attacks in 24 hours have left at least 40 dead.e are some of the security precautions you have to take when you're traveling anywhere in the capital. flak jacket, armored car. blasts have turned kabul into a fortress. the american university looks more like a maximum security prison with good reason. after clearing several security checks we finally arrive at the university that came under attack back in august of 2016. that's when taliban suspects went on a ten-hour rampage, killing 16 students, faculty, and police. student breshna musazai watched them blast their way onto the compound. >> i heard them running ilding. >> reporter: she couldn't run from the nmaua limp from childhood polio. >> when he shot me, i started to pretend because i thought this is the only thing i can do to save myself. after that he shot me again to make sure i was dead. >> reporter: a university sponsored a medical trip. she returned to school last year and graduated in may with honors, but she fears more than ever for her life. >> when i leave home, i kn

charlie d'agata reports from kabul. >> reporter: my brother, my brother, is all he can scream out.osing a family member is a daily reality in this city strangled by violence. it's the fifth major attack in the last four weeks, killing dozens of people. the first suicide bomber entered the sports club late this afternoon, blowing himself up. rescuers and journalists rushed to the scene unaware another suicide bomber was hidden among them. that second explosion sent the death toll soaring. the pentagon watchdogs says a resurgent taliban has left only 56% of the country under government control. the attack is a reminder that nowhere is safe. despite blast areas like these everywhere, restaurants, sports centers, even hospitals have been hit, this after 17 years of u.s. efforts to establish security. it was a duty u.s. army command er is -- sergeant major timothy bolyard gave his life for on monday. he was on his seventh overseas deployment. he was killed on an inside attack killed by one of the afghan members he came here to train. it followed another insider attack that claimed the l

charlie d'agata is in kabul. ( sirens ) >> reporter: relentless violence here has only surged since we arrived. eour attacks in 24 hours have left at least 40 dead. these are just some of the security precautions you have to take when you're traveling anywhere in the capital-- flak jacket, armored car. s dless checkpoints. blast walls have turned parts of kabul into a fortress. the american university looks more like a maximum-security prison, with good reason. ter r clearing several security checks we finally arrived at the university that came under attack back in august of 2016. heat's when taliban suspects went on a 10-hour rampage, ntlling 16 students, faculty, and police. student breshna musazai watched them blast their way on to the compound. >> i heard them yelling at other students, and they were throwing grenades in the building. >> reporter: she couldn't run from the gunmen because of a ood from childhood polio. >> when he shot me, i started to ugetend dead because i thought this is the only thing i can do to save myself. and after that he shot me again to make sure i'm dead

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charlie d'agata, cbs news. >>> the controversial urban shield program will begin for the final time in the continue form, the event at the fairgrounds brings law enforcement personnel from all over the country, protesters have criticized it as promoting the militarization of police in march the board of supervisors voted to end urban shield in its continue format and will return next year with a focus on train for natural disasters. >>> today, jump is rolling out a nonette of dockless bikes in san francisco's park. the uber owned company added 50 to the area in addition to its existing 250 bikes in san francisco. jump used a legal loophole because the park is not subject the transportation code because sit considered a federal property. >>> a baseball star and bay area native is giving back in a big way, yankees all star cc and his wife were at their alma mater yesterday at vallejo high school. the foundation provided students with new d hosted a pep rally and career panel. it is cc sabathia. i had to get that right. > your weather out. there baseball weather for example you are lucky

our charlie d'agata is on the front lines with afghan forces in america's longest war. ( gunfire ) >>eporter: they're afghanistan's most powerful weapon in the fight against taliban and isis militants: a swat team off the leash, crisis response unit 222 swarms on to the scene at the first sign of trouble. when a terrorist attack goes iwn, this unit is the one to stop it, and they react within five minutes of getting the call. we watched as these u.s.-trained counter-terrorism forces edsponded to a simulated complex attack. it's exactly the kind of training you'd see with u.s. forces because they're being erained to think and fight like americans. if only there were more of them. they're stretched beyond the limit. this elite squad of about 50 is taket all there is to take care of kabul. ane regular afghan army, numbering more than 200,000, has suffered from a series of taliban surprise attacks. in just one week last month, the taliban killed 200 afghan soldiers and police. the taliban is now openly active in 70% of afghanistan, far more than when the majority of american and nato comb

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charlie d'agata has covered the conflict there for the past decade.e's in kabul where he spoke to some of the war's survivors. >> reporter: reassurance from defense secretary mattis might be a hard sell during a week that has seen yet another spike in violence here as afghans mourn the death of those in kabul. this is what bloodshed does to a city. we drove to an area to the scene of an attack that shocked the world in 2016. from the outside the american university looks like a super max prison. inside the blast walls and razor wire, the campus is an oasis of calm. but it was the target of a taliban rampage that lasted ten hours killing 16 students, faculty, and priests. a student is still haunted by that night. >> i heard multiple gunshots and then an explosion occurred. it went dark and i couldn't see anything. i could not run because of the polio on my right leg. i could not run, so i was trapped. >> reporter: a gunman's bullet tore through her good leg. he then came back and shot her in the foot. >> so i was there for almost six hours pretending t

charlie d'agata. good morning. >> reporter: good morning. on s week of a terrorist attack that killed 20 people, but in a week a u.s. serviceman died in an insider attack that followed another attack in july. the afghan president told u.s. reporters here today preventing blue on green attacks, as they're called, is a top national priority. isis has claimed responsibility for the twin bombings in the sports center that happened on the day we arrived. u.s. forces are at the forefront of a coalition effort to train afghan forces not only to fight isis but a resurgent taliban, which has not only reclaimed territory that u.s. forces fought and died for but continued to hit targets here in the capital. the visit also coincides with a change in leadership of the u.s. military and that may usher in a change of tactics here. d'agata, inside afghanistan, thank you. >>> federal prosecutors have identified the man they say is behind some of the world's most destructive cyberattacks. the justice department claimed north korean programmer backed by kim jo

charlie d'agata is traveling in afghanistan doing a series of reports for cbs news. he's in kabul this morning with the sudden spike in violence. >> reporter: a sports club, clearly a civilian target, meant to kill as many people as possible. and today here heart-broken families are waking up to the reality they'll never see their loved ones again. isis today claimed responsibility for the bombings in that shia neighborhood. emergency workers and journalists became victims when a car bomb blew up after that first explosion. sergeant major timothy bolyard gave up his life in an effort to stop that kind of violence. he was shot dead by an afghan police officer he came here to train as part of his mission. it was his seventh overseas deployment. six bronze medals. two for valor. it followed another insider attack that killed 20-year-old corporate joseph mayfield in july. yet just yesterday, u.s. secretary of defense mattis said reconciliation here is no longer a mirage. well, it may seem like a mirage to the families of fallen u.s. servicemen returning home. norah. >> a