If there is anyone out there who can help I would really appreciate it. All I want to do is carry a 4" closed Case stockman with a 3" main blade onto my airplane that is leaving from the Los Angeles Airport. I called the airport police and they said that I could absolutely not. Are they just trying to scare me or is it not legal to carry an otherwise legal knife in California on the plane. Any ideas about how to get it on the plane?