it is onboard australia's ocean shield. it picked up two ping signal detections just over this weekend. the first one actually for more than two hours. the second for about 13 minutes. and cnn has now turned around what those clicks sounded like this weekend. that's what they heard. that's what they're listening for again. relocating these pings. now the main focus. today the search zone is drastically scaled back, reduced to 30,000 square miles. here you have 14 ships, 14 aircraft involved in today's search. they are on borrowed time, as today we keep counting day 33 since that plane vanished. with the 30-day more or less battery life of those black boxes, really more or less out of juice. australia's defense minister said they're holding nothing