fuel subsidies for Angle Flight pilots

Angel Flight America is trying to raise $2 million to offset the cost
of fuel. Does anyone know how they propose to subsidize Angel Flight
missions? The problem, of course, is the rule regarding sharing
expenses. I suppose that if an Angel Flight pilot flies two passengers,
Angel Flight could pay two thirds of the cost on behalf of the
passengers, but the pilot would still have to pay his pro rata share.
Am I missing something here?

Stephen S. Ashley