sarah thomas , who has worked exhibition games , will be a line judge for the 2015 season .
she 's already broken ground in the officiating field as the first woman to work college games in 2007 .
she was the first female official on the fbs level and the first to officiate a bowl game , the 2009 little caesars pizza bowl in detroit .
sarah thomas is the nfl 's first full-time female referee and will be a line judge during the upcoming season that