>> the federal aviation administration has referred 37 unruly passengers to the fbi for potential criminal prosecution amid a sharp rise in incidents on flights this year. fox news senior correspondent laura engle has more. >> hey, griff, unruly passengers are no longer banned from the airlines they cause problems with. passengers who threaten violent behavior could receive civil penalties and prosecution. the f.a.a. reporting this week it's referred nearly 40 cases of passengers behaving badly since august to the fed after disruptions began to soar this year. the agency working with the justice department saying it's developed a process to continuously hand over a list