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 .
FAA reports more than 900 cases of unruly behavior on planes over past five years . Last month , a man reportedly exposed himself to passenger on Southwest Airlines . FBI officials say bad behavior less tolerated on flights after September 11 attacks . Unruly behavior can bring civil fines up to $ 25,000 or criminal charges .