Greetings:
Here is one more possible solution I have used with my dogs at different developmental stages in their lives and for different reasons - Classical conditioning method by Victoria Stilwell. She has a DVD series I have found very helpful. It is titled "Canine Phobia Series." It covers from thunderstorms, fireworks, city sounds and calming. This series is for the treatment and prevention of anxiety in dogs.
We traveled with our dogs from a GSD to a Maltese! We compete in Rally, Nosework, and Obedience. We are certified Karen Prior Academy Dog Trainers. We are presently working with a rescued GSD who has a few challenges and we are grateful for all he reminds us everyday.
Blessings for all of your journeys and hope this is helpful.
Mirna.