To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoMILWAUKEE (CBS 58) -- Jadin O'Brien loves a good challenge. "I competed as a heptathlete for the University of Notre Dame," O'Brien says. O'Brien recently signed autographs for kids at the Summit Educational Association job fair. "So I'll be moving back to Notre Dame. I'm taking on another challenge and trying to become one of the few athletes who've been able to compete in both summer and winter."