An online ad for MJ (Mary Jennings) Hegar, who’s looking to represent Texas District 31 (north Austin) in the House of Representatives, has gone viral over the last four days. The ad, assembled by Cayce McCabe of Putnam Partners, a D.C.-based agency, tells MJ’s story — chopper pilot in Afghanistan, shot down and rescued, relocated, sued to overturn Pentagon ban on women serving in ground combat. Running against Republican John Carter.