[Raze]The large, red anti-dragon shields should be visible on screen around the harbour building, High Hall and the bunker in the mountain at the start of the fjords. I don't know what towers you are referring to, but I would assume it was entering an anti-dragon area that killed you, rather than actually touching a tower. If not, where exactly were you? [/Raze]You're right! I checked my last save game, and it was actually the red-ish force fields surrounding a couple of the towers that was capable of instakilling. But their deadliness is still quite sudden, as you only take a little damage from entering the their edges and then automatically lose all your hitpoints if you fly further inside one.