What it is about:
A mutator by Immortius, that allows a guard to take possession of a watcher in the map to see through it, and fire from it.

How to use Armed Watchers mutator:
1. Copy mechina.u and armedwatchers.int to your unrealtournament/system directory.
2. Open up Thaux.ini and under the heading [Engine.GameEngine] (towards the bottom of that section) add the line - 

ServerPackages=Mechina

3. Run thievery and when starting a multiplayer game, open the mutators menu and select Armed Watchers

Note: This mutator doesn't work with the map Th-Archery.  Not my fault :P

Further Note: Watchers can now be repaired with repair tools - merely hold-frob a repair tool over a damaged watcher and it will be active again in no time.

--Immortius