Healing generates a LOT of threat. Also, when you are in cover or crouched, you have much more damage dealt. So you throw out big heals, big damage, and you are target A#1. As a rule, you should fire off a couple of the heal over times(the one that gives you a chance at the proc) but letting your companion just do all the damage. Bowdaar is good at pulling threat. just make sure he's in the tank mode, and make sure he has the flare gun going to pull aggro. Give him a few seconds of attacking before you heal. otherwise they like squishing the healer. Also if you find he's not getting the one attacking you, have him attack that one. MAKE him attack that one.
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