A lot of things. I take stuff the wrong way when people talk to me, I get frustrated with every little stupid thing. A dumb cup got broken in the invasion, and when I found it I just-

[Michael starts to mimic the act of throwing, and stops himself. He obliterated that cup like it was personally responsible for the Null attack.]

I'm not like this. [He rubs a hand across his face.] I'm worried I'm gonna- [do something he'll regret.

It wouldn't be the first time. He broke a kid's nose once, and as a teenager, he basically almost killed someone. But he grew out of that phase, and he's been fine for years (relatively), so this isn't him.]