hello again from fox news in washington. it is a race against time in the southern india ocean. search vessels try to find the malaysian jetliner before the bee condition on the black box goes dead. the head of the search says a chinese hip has detected pulse signals and australian ship picked up another signal today. our correspondent has the latest. doug? a chinese ship searching a small patch of ocean off the west coast of australia picked up a single ping on friday and another on saturday. today, an australian ship with sound equipment picked up a third signature hall in a different part of the search area. but authorities issued a word of caution of any rising expectations. the signals and the objects could not be verified as being related to the missing aircraft at that point in time.