Wow, that is great that he was calm on your trip......here, the ends surely justified the means
I have had behaviorists in for my dog and his behaviors, but it was very expensive and time consuming, and I must admit not too successful. From what I saw with Cesar's treatment, desensitizing a dog from the sound problems is not an easy task. However, we have to try everything, and it may work for you....praying it does. Good luck and please let us know how it goes as I am sure we are not alone with this issue.