(October 30, 2018, 1:34 PM EDT) -- ST. LOUIS — A health insurer’s unsupported calculation of the allowable charge for air transport is a “radical view” of its powers under the Employee Retirement Income Security Act, would leave insureds with “virtually no coverage” and cannot withstand scrutiny, a couple tells the Eighth Circuit U.S. Court of Appeals in an Oct. 26 opening brief (Ivan Mitchell, et al. v. Blue Cross Blue Shield of North Dakota, et al., No. 18-2784, 8th Cir.)....