Originally Posted by metaphysician
My inclination is to say, "SHIELD tech." No reason every cool gadget has to be made by Stark. Hell, if you take aspects of the Ultimate version, he could be a technical agent who designed the flying harness himself.
I agree that Stark doesn't have to design everything in the MCU, but if you make it SHIELD issue, then the question arises: what's so special about Agent Wilson that he gets a special pair of hi-tech wings to flit around in?
Personally, I'd like the wings to be Wakandan in origin.