I have responsibility?

I just got out of my first TA session. The second is at 2:05. It went pretty well, I'd think, there was one guy who had to leave early for a work meeting, but he managed to get the experiment done on time (a simple pendulum test). I now sit with a pile of 40-something lab reports to grade. w00t. I feel like such an eager beaver, I'm going to tackle it now.