Ianto's former training was a bit different, but they at least got some of the basic principles right. And his naturally ordered mind helps him stay on top of things. While he knows it wouldn't keep out a determined telepath, and that this will only help him if he's always shielding, he at least knows some of what to do.

Gwen increases the flow of the 'water,' flowing like a river around and past her mirrored shield, thinking about the rivers that flow into the sea.

I'm not surprised, Jack replies to April. He's going to need the most work out of all of them. Feel free to knock him around a bit to let him know this is serious. He knows he can trust April not to seriously hurt any of his team, and sometimes Owen in particular needs a bit of a fire lit under his ass to get him to take things more seriously.