Castiel wouldn't have known about the public channel, nor how it worked, unless it had been explained on that piece of paper with all of the frequencies. Even then, he was uncertain about how to do it and was therefore grateful that Kratos was willing to make the broadcast.

This was still so new to them. For once, the radio messages would be coming from patients rather than from some unknown figure. It felt like a step in the right direction, though who knew if they'd get any replies.

"Thank you," he said to Kratos under his breath, though at that point the door opened and a pair of other patients stepped inside. So there were others who had also made it this far. That was a good sign, and Castiel even recognized one of them.

Seeing how only two of them could write down coordinates in the first place, Castiel decided to volunteer for this particular task. "I'll go speak to them," he said as he moved away from the computer. "I'll be back in a moment."

[To here.]