The controller tells the C-130 crew just prior to hitting the typhoon eyewall to "squawk 20000". Transponders, the device that allows controllers to identify individual aircraft by a unique code, only allow for a four-digit number, not five, as is shown here.
Jay says typhoon Phoebe is headed east towards Samoa after hitting Nauru. But Samoa is SSE of Nauru, and heading east, the typhoon would hit Kiribati.