4. And he gets to write off his operating costs. Win Win.
Seriously, I think this is neat but the article is portraying this as an act of pure beneficence when he's probably writing off fuel, maintenance, depreciation and any other operating costs that apply.
Like this guy I love ze doggies and ze kitties but I think it's worth pointing out that he's getting a major tax break for his flying time. I'm a pilot and I'm familiar with quite a few other charitable groups that allow you to write off a variety of expenses. Quite a few of these non-profits do great things but taxpayers do indeed subsidize these activities and I can't recall reading any coverage of that fact.