One difference between D&D players and fighter plane aficionados: the propeller heads don't deride one another and pick fights over whether a HUD is bad technology compared to a reflective site. WWII pilots don't harangue Desert Storm pilots, saying, "You have no fighting skill, you just let the computer do all the work." And WWI historians don't take offense when the AWACs crew asks, "Why was such a flamible gas used to float the observation dirigibles?"
The war plane guys can discuss the technologies (brilliance and flaws), the tactical strategies (successful and failed), and the feel of the actions (thrills and terrors) without insulting one another or taking offense at the mere existance of the other planes.