 is we get a physician's release from their doctor. This verifies the need for us, and it also tells us that it's safe for them to fly in a small, unpressurized aircraft. Then once we get that physician's release, we then go to work to find the pilots. And we're dealing with volunteers, so we're not calling up Fred saying, Fred, you're going to take this flight on Friday. We're calling Fred and saying, Fred, we have a great opportunity for you to take a flight on Friday, and asking them to help out.