Don't blame you. That's just messed up.

hm...

A quick search on his name gave several results, none for free, none arial images.

Patrick.

I'm assuming that "Peter" is the Peter up above (Zeus).

For what it's worth, today I had a sale thanks to Flickr.

The buyer found my photo on Flickr then searched my portfolios on agency websites, couldn't find it (because full-res of that photo wouldn't have been accepted anywhere) and contacted me directly. 
Because it is a non-profit site I asked for 20,00 � for an RF license and the buyer had no problem with that (30 � would have probably been fine too). The photo on Flickr is ca. 800 px wide and with no watermark.

Tell him Yes.. if he hires the plane / Heli and pilot and lets you keep the copyright to all the shots take for whatever use you want. See what he thinks of that.

Sounds like a good plan.

I was just trying to keep the one image he wants from you at FREE... lmao

Yours was a friend, who might have expected some sort of favour (though not as it was for his business, maybe for a photo for the wall).
A former colleague's brother also shoots aerials and gets a few emails each month (fromj non-buyers) asking  him to remove the watermark from the pics on his website - sometimes really unpleasantly: "How am I supposed to use this with your watermark all over it?" was one question from someone wishing just to 'lift' the photo for free.
And he wasn't even selling them royalty free.
(When I taught, I was always looking for 'free images' to use in the classroom on the smartboard. At first, when I didn't know about RF, I used to wonder why there were big watermarks on photos that 'didn't charge a royalty' after all, they showed up on search for 'free photos' or 'free images')