Many passengers however, have expressed displeasure with these seats. Moreover, the US Department of Transportation (DOT) has begun to explore the safety issues associated with increased aircraft capacity and reduced seat pitch that results from the installation of "slimline" seats. In an 14 April 2015 hearing of the DOT's Advisory Committee for Aviation Consumer Protection, Cynthia Corbett, an investigator for the Federal Aviation Administration (FAA) Civil Aerospace Medical Institute, discussed concerns regarding the emergency evacuation of higher capacity aircraft.[4] The citizens' group "Flyers Rights" brought a case against the FAA in 2017, arguing that the agency had a responsibility to prevent seats from becoming so cramped as to become a safety issue in an emergency.[2]