Tried the pilot-nod to a few Delta pilots and it didn't go well... Maybe I should wear my hat more.

It depends. Half will nod back. Half will try to kill your soul.

You can't tell who will do what by looking at them. You just have to try. Bring some garlic and a cross.

Awkwardly long eye contact fixes that every time.

Make sure your eyes well up with tears. The puppy dog effect goes a long way.

I prefer overt domination.

Just throw up the devil's horns...rock star status like. Pilot AF baby 😉

I usually raise arms like wings and rock them from side to side.

Buddy, I know I give the nod to all pilots. And “incognito” commuters. We all know who they are when we see em. It’s not a Delta thing. Possibly you spend too much time in ATL?

You did that to me the other day. I thought you were retarded and you weren’t even wearing your foam helmet.
Sorry, I mistook you for someone else.

One finger is all you need to wave. It's understood globally.