Snide remark above aside, these aircraft were “safe” enough to take our young men to Berlin, many other places, and back. The FAA is tasked to ensure safe air travel, no question. This venture is not, in my humble judgement, “air commerce”. It is a history lesson given for reimbursement, exactly like any other history lesson taught in schools or colleges. This travel is completely voluntary on the part of the traveler and is rather expensive, actual dollar-wise. It seems to me that if the FAA ensures that the crews are competent, the maintenance is adequate, and the riders are willing then there is no real issue here. Statistically speaking it is more dangerous to drive to the airport than it is to ride on these aircraft. As to the “fee” or “cost”, well this isn’t a Part 135 operation and keeping the aircraft moving is expensive so I have no problem with them charging. They sure don’t seem to be in the business to make a profit.