A proposal to elevate the standing of Special Operations Command among the military's combatant commands is still under consideration as defense leaders mull changes to the Unified Command Plan, according to officials. At issue are new authorities for the Tampa, FL-based command, which is tasked with everything from training foreign forces, including paramilitary groups, to the targeted killing of enemies like Osama bin Laden. Many operations involving SOCOM are secret, or "black," and the command has in the past worked...