The Arizona Cardinals announced Monday they have hired a female as a coaching intern during training camp and preseason. Jen Welter, who will help the inside linebackers, is believed to be the first woman to hold a coaching position in the National Football League. Welter worked with linebackers and on special teams as an assistant coach for the Indoor Football League’s Texas Revolution this past year. She is believed to be the first woman to coach in a men’s pro football league. Earlier this year, the NFL hired its first female on-field official.