McGhee Tyson Airport in Knoxville, Tennessee bills itself as the “Gateway to the Smokies.” And for good reason. With the Smoky Mountain National Park, University of Tennessee, Oak Ridge National Lab and a thriving business community nearby, this busy regional airport handles 140 flights/day on average and 1.75 million passengers per year. Because all arriving passengers are funneled through a single door when exiting the terminal concourse,

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