Several late-filing super PACs revealed their donors this week. Among them was the small but controversial Secure Arizona PAC out of Kansas City, MO. Secure Arizona has received contributions from four individuals this election cycle, totaling $145,000. One of those four donors is none other than Walmart board chair Rob Walton, who gave $10,000 to the super PAC on June 30, 2012. While Rob’s siblings have gotten into the super PAC game already this cycle, the contribution to Secure Arizona represents Rob Walton’s first such involvement.