. >> reporter: eyewitness donna gunderson was sitting at a nearby patio. >> and i see a stroller goingthe driveway, and my heart dropped. >> reporter: just before the baby rolls onto a highway -- >> it was a very scary moment. >> reporter: -- you see gunderson's brother ron save the day. >> i knew i can get it, and i got it, and i'm thankful for that. >> reporter: he says the baby's great aunt is shaken but okay >> she tried everything she possibly could to get up her knees were bleeding when i got up to her, and she was still shocked. she was crying. >> reporter: ron telling nbc's los angeles station he has fallen on hard times, at one point homeless and struggling with depression. >> you want something different in your life, you're going to do something different, and that's where i'm at today. >> reporter: after this close call, relief, for having been in the right place at the right time erin mclaughlin, nbc news, los angeles. >> boy, even knowing it turns out okay, it gets you, doesn't it that's "nightly news" for this thursday. thank you for watching, everyone i'm lester holt. p