When these sort of rare high value warbirds are flown as part of an appearance schedule around the country or for living history flights generating revenue, you end up with the same pressures you have in any flying ENTERPRISE ( as opposed to private collections or occasional demo flights at home base by museums ). Meeting schedule, mission completion, satisfied customers, $$$, all put pressure on MX, OPS and crews. The Living History Flight exemptions are great. Thank you FAA. Being able to generate any money that helps offset the cost of these aircraft is beneficial to historical preservation. But just like at an airline or a squadron, leadership must be sure to insulate maintainers and crews from the pressure to save money, or make a mission, whether a loop around the city with pax or a multicity tour. Airbase AZ lost a one of a kind Spanish built He111 back in 2003 while departing Cheyenne WY on the way to it's next appearance in Montana.