Exp leech from guards : City of Heroes - Submissions

You can damage something, then pull it to the police drones and they will finish it off, but you will still get a portion of the exp according to how much damage you did. This works well when doing mass pulling and casting huge AE's on the crowd and letting the police drones finish some of them off.

Common game knowledge as thats part of the drones main purpose is to kill mobs that may be swarming you... as well already posted...

Keep submitting though, hardly anything in the CoH section so anything good will get access fast and probably isn't already in the site...