John swallows and risks looking down at Holland, then takes a controlling breath and forces himself to look away again and move toward Ianto.

"Well the last one I was in felt pretty real, I even got stunned with an energy weapon and it hurt like hell. Then this other time there were these... weird, mist creatures messing with our heads but somehow they made the hallucination... communal. That felt real too but the content was what gave it away, kind of like this."

He half glances toward Holland, stops short of looking at him and fixes his eyes n the helicopter instead.

"So. I guess we have a few options. Try yelling a lot. Walk around in case it has a limit we can find. See if it responds to us desperately thinking mental commands to disengage us, or wait a few years in hope of a rescue."