Adding new Global Flags

I want traps, specifically Turrets and SAM Sites, to do damage to players. How do I go about adding this flag to the default RuleSet? 

Changed Status from Pending to Closed

Those wouldn't be flags, although SAM site targeting would have to be modded by another plugin for targeting.  For damage, you should be able to add SAMSite to the traps entity group if they aren't in there already.  Turret targeting and damage should already be a feature of the plugin.

I went ahead and made a simple plugin to manage targeting for SAM Sites.  It currently handles player or server-owned SAM Site targeting of NPCs, players, and animals.  NextGenPVE can now call out to it: SAM Targeting.  Note that if loaded, NextGen shows it's settings in global flags.