(November 14, 2016, 8:49 AM EST) -- WASHINGTON D.C. — A libertarian-leaning think tank and a consumer group that are seeking to allow airplane passengers to use e-cigarettes and vaping devices say in a Nov. 4 reply brief to the District of Columbia Circuit U.S. Court of Appeals that part of the reason the use of e-cigarettes should be allowed on airplanes is because the use of e-cigarettes is not the same as smoking and the U.S. Department of Transportation’s definition of vaping as smoking is unauthorized (Competitive Enterprise Institute, et al. v. United States Department of Transportation, et al., No.16-1128, D.C. Cir.)....