Land anti-air guns, from auto-cannons to laser-guided missile launchers spread throughout the maps, maybe even a vehicle for anti-air. Many maps get dominated by the birds in the sky, with some people going 20+-0, and they can out heal the javelin's damage, needing an assault and two engineers to take them out. This makes them OP, especially when hardly any use anti-air engineers, being a solo anti-air engineer and dealing with 3 helicopter on paradise can be very satisfying, though again if they have engineers in the little bird or big bird, you can't take them out solo unless you get a nice hit with an rpg. Thank you, this game is a blast, and I see such a great future in it.