Transcript for Sarah Thomas Making NFL History
Finally tonight here, our person of the week. A mother of three from Mississippi. At home, she already calls the shots. But she's about to make the calls on a much different playing field. When the new NFL season arrives, so will someone else. Sarah Thomas, the first female ref in the NFL. She's no novice, and has been a ref from pe, F wee up to college football. It started when her brother started officiating. He told her about the training. She showed up, and when she made it all the way to college football -- The guys, it's kind of funny. Because then they'd hear my voice, turn around and say, hey, that's a girl. Get your butt up there. But during the training, there was some advice she would not take. They told me to tuck in my hair, but when they said I couldn't wear makeup, that's where I draw the line. Her boys, loving watching their mother. I have a daughter now, and I will instill what I heard from my father, believe in yourself, and part of the victory is getting up and learning from your failures. And because of that, she made it. I'm Sarah Thomas, and I'm a line judge for the NFL. Because of that, we choose Sarah Thomas tonight. Rooting for her this fall. I'm David Muir, have a good weekend. Good night.
This transcript has been automatically generated and may not be 100% accurate.