FBI reports more than 900 cases of unruly behavior on September 11 . ( CNN ) -- Last month , a man reportedly exposed himself to passenger on Southwest Airlines . Southwest Airlines officials say bad behavior less tolerated on flights after planes over past five years attacks . Unruly behavior can bring civil fines 250,000 or criminal charges .
FBI reports more than 900 cases of unruly behavior on September 11 . Last month , a man reportedly exposed himself to passenger on Southwest Airlines . Southwest Airlines officials say bad behavior less tolerated on flights after planes over past five years attacks . Unruly behavior can bring civil fines 250,000 or criminal charges .