Message in a Bottle

[seveneleven]

Late on the morning of the 13th, everyone's communicators broadcast the same message, repeating over and over with a blink and a quiet, androgynous voice:

"Incoming transmission. Please report to the Navigator's chambers. Incoming transmission. Please report to the Navigator's chambers."

Once everyone's assembled down by Navi (or announced they're not going), the following recording broadcasts on one of the main screens:

( incoming transmission )