Following the murder of four unarmed Marines in Chattanooga, Tennessee, on Thursday, Lt. Col. Allen West called on President Obama toimmediately issue an executive orderending gun-free zones at U.S. military sites.During an appearance on Fox & Friends, Friday,West was adamant:The battlefield is here. And its just a simple act of leadership, a change in policy to enable [military personnel] to be able to defend themselves.He...