Panic in Walmart as man walks around with tactical rifle wearing body armor

Springfield, Mo. -- Police here say they arrested a man who went into a Walmart store Thursday with a rifle around his neck and wearing body armor and military-style clothes, prompting terrified shoppers to flee.Springfield police tweeted that "an armed individual" was confronted and arrested. No shots were fired.CBS Springfield affiliate KOLR-TV says Lt. Mike Lucas told reporters police got a call about an active shooter at 4:09 p.m. and arrived within three minutes.According to Lucas, a 20 yea