I believe he meant “flying enemies” as in large pandoran entities capable of flight, that would require some aerial unit (an interceptor) to shoot down on the geoscape before engaging. I keep coming back to a scylla type enemy that first requires an air superiority vessel to shoot down, then once on the ground you can have your drop ship deploy infantry to engage with. Also had this idea in my head of larger pandoran enemies that can transport smaller pandoran infantry like a host - e.g.
