(December 7, 2016, 12:58 PM EST) -- NEW ORLEANS — The Fifth Circuit U.S. Court of Appeals held oral arguments Dec. 5 in a dispute over whether a subcontractor’s insurer can be liable for the defense of a contractor named as an additional insured in the policy (Colony National Insurance Co. v. United Fire and Casualty Co., No. 16-40676, 5th Cir.)....