Have added a security section into research, with 2 schematics, the armoury and the cannon turret. You now have to unlock before these are available from the build menu. They are also linked, so the armoury requires research before the cannon turret is available. Couple of fixes to the tractor beam as well, first an issue with stationary scrap, where it could end up pushing it away, and a bug in minimum change angle calculation, could be wrong sign, giving wrong direction change. Oh and have improved the shield turret, giving it a larger range. So is now more useful and worth considering in your defences. Notes:- [list] [*]Security section to Research (Armory -> Cannon). [*]Armory & Cannon, disabled in build menu until researched. [*]Improve: Shield turrets increase range ~50%. [*]Improve: Tractor beam on stationary items, set initial to required direction. [*]Fix: Tractor beam minimum change angle could be wrong sign, giving wrong direction change. [/list] Nick