Doob was left floating in the middle of the SCRUM. The only thing between him and Dinah was a privacy curtain. He was about to say "Knock knock!" when he heard a string of beeps emerge from a speaker on the other side. An incoming Morse code transmission, which he had not the skill to understand. To that point Dinah had been quiescent, but he now heard her going into movement, peeling herself out of her sleeping bag. He thought better of bothering her just now, and decided to check his own email.