. >> meera thakrar is enjoying a day of sightseeing with her 4-year-old son krish and her mother. >>ve and a half hours in the city. >> at the turnstile in kendall station, meera is carrying krish. she sees a train if the station. >> i was all excited. oh, my god, the red train is right there. why don't we just go on this one. >> she doesn't realize the train is on the opposite tracks. mira tells her mom to hurry. then walks ahead to hold the door. >> i was in my own world. >> in an instant, she was off the platform. >> i just walked straight down there. >> krish hit this ground hard. >> i saw my son hitting head. >> they miss the potentially fatal third rail, but are trapped in a perilous spot. the next train is arriving at any moment. they desperately need help. >> there was no support to climb there and come out of the tracks. you really needed somebody to pull you up from there. >> then from out of the crowd, a man leaps on to the tracks. he grabs krish while other passengers pull meera to safety. >> my son was taken out right away by that guy who jumped for us which was absolute

back, calling the allegations absurd and fictional and portraying themselves as the real victim of krish theft by the u.s. brought to life by the edward snowden nsa leaks. >> thanks to pamela brown for that report. and chinese news agency is reporting that beijing has summoned the u.s. ambassador over these five indictments and is warning u.s./china relations are in jeopardy. let's get more on this from beijing. it would seem the retaliation has only just begun. >> reporter: oh, that's right, john. how far this would go is anyone's guess. the u.s. government also confirming that max bacchus, the ambassador to china, was in meetings with the foreign ministry. he was called in, it appears, late into the night after that initial announcement by the u.s. justice department. that image of the alleged hackers in wanted posters, similar that you would get for international criminals of the more violent nature. even terrorists by the fbi is deeply embarrassing at best for the chinese government. even one of them in the p.l.a., people's liberation uniform. that they were hand in hand with the gov