welcome back to newsroom. i m chris cuomo here in new york. i am so shocked by this video that we saw today i m showing you right now. a runaway stroller leads to a seriously close call for a philadelphia mother. see the stroller? she just loses it for a second. there is a toddler in that stroller, okay? our affiliate kyw reports the mom was distracted obviously. the stroller carrying the toddler rolls away. the mom jumps right down. now, you start watching this video. the p baby s fine. that s the headline. don t worry about that. but she jumps down there. you look around. you don t see a lot of bystanders coming until she s down there. makes you wonders, didn t anybody help? yes. why? the real hero in this, the public transit officials say a bystander, he went, hit the alert button which stopped the next train from coming in. it was less than a minute away. the child, again, is fine, but