Factorio Forums

At high evolution levels, swarms of pterodactyl like creatures will attack your base, making an exhilarating end game.
Although deadly, one may defeat them with SAM sites which take missiles as ammo, cover a large radius and can shoot many flying creatures at once.

To get an idea:
Swarming aricraft
https://youtu.be/176jV4nu-Ys?t=1116

SAM Site
https://youtu.be/QpoXfgRlAng?t=6

So i must defend my water boarder too

But you don't need to add SAM sites to the game. A SAM is the wrong solution for a thread of pterodactyl. Ths flying dinosaurs are closecombat fighters which don't use long range weapons. So why you need to shoot them many kilometers before they are in their combat range?

All you need to defend the airsapce around your outpost and bases is in the game.
Gun and laser turrets are used by Rheinmetall Defence to protect the airspace as well https://www.youtube.com/watch?v=KUGpCUkFwYI