leaving the city." they sleep on mats their food in jars, their water in bottles. for some, this is the only life they've ever known. these babies were born in a shelter in the southern city of kherson, and there's a lyricism to life underground. ♪ even a bit of drama. actors perform a play about war as a real one rages above. often the bomb shelters are improvised, like here in kharkiv, ukraine's second-largest city. we were there right when the bombs started falling. yesterday, this was a subway station today, the trains have stopped and people have flooded down here seeking refuge and safety they're terrified, and they don't know what's next when veronica woke up to the sound of bombs, she didn't know where to go. she heard about the metro from friends on instagram. are you going to spend the night down here in the subway >> yeah, i have a child, one boy 1.7 years old, and the sister, 3.5 years old.