We went to Germany when our girls were young. Normally they don't approve families with CF going overseas since appropriate medical care isn't available on base. I located a few CF clinics near where we would be stationed and spoke with the clinic commander (my future boss at the time) and convinced him to approve us. Under EFMP the gaining medical service commander (actually, the medical staff most concerned such as pediatrics) generally has the say. We enjoyed Europe and the girls are richer for it, but it was very tough at times and my wife and I wondered if we had done the right thing. For each assignment my wife and I researched the CF care available and then talked with the TriCare folks in person. We had appts and consults arranged prior to moves. It's amazing how often our first activity at a new assignment was a hospital admission.