A man was spotted Monday afternoon carrying a semi-automatic assault rifle and a pistol at a pro-health care reform rally next to the Veterans of Foreign Wars convention in Arizona where President Obama was speaking. The local paper The Arizona Republic reported: A man, who decided not to give his name, was walking around the pro-health care reform rally at 3rd and Washington streets, with a pistol on his hip, and an AR-15 (a semi-automatic assault rifle) on a strap over his shoulder. "Because I can do it," he said when asked why he was armed.