Today we were taking down a medium ash tree in a side yard over a fence. Nothing extraordinary, easy climb and rig. First piece rigged got stuck in a crotch below (35-40’ from the ground), not seriously and nothing out of the ordinary. Simple walk back to the PW pull up on the rope to loosen and start the lower again. Everyone has done it. As soon as we got the lift needed a 1” dead branch broke free from the brush and fell. My head was down because I was just pulling on the rope. The climber started hollering in the headsets and I knew something was coming, I glanced up just enough to see it falling and I leaned forward and put my head back down to try and avoid it. The limb hit the back of my helmet, shut my Sena off and grazed my left shoulder. Just a stupid 1” piece of deadwood right... Wrong... put a couple pretty serious cracks in my helmet. Fortunately there wasn’t enough impact to effect my neck or really my shoulder (my ears were ringing for a bit though). But it’s a wake up call as to why we wear hard hats from start to finish in our work. And if you don’t, I don’t think this will change your mind... but consider it anyhow. This wasn’t a very big limb and supposedly high density plastics. The ball cap ain’t gonna let you, grab another helmet and finish the job. I’ll be ordering another Kask tomorrow!!