I trust you can make your points without dissing in terms of Christian precepts. Like Judaism, which is practiced by a minority of ethnic Jews in the U.S., not all Gentile ethnics practice Christianity, even some who attend churches. It is offensive to continue to imply hypocrisy on the part of Christians if you don't know the religious convictions of the airport administrators.
That said, being a Christian, I won't be suing you over it. Lighten up, dolling!
Re-read this and several of the other threads on the subject and get back to me about what's offensive.