signals consistent with those emitted by aircraft black boxes on two separate occasions. i can tell you that "ocean shield" has been able to reacquire the signals on two more occasions. late yesterday afternoon and late last night perth time. the detection yesterday afternoon was held for approximately five minutes and 32 seconds. the detection late last night was held for approximately seven minutes. "ocean shield" has now detected four transmissions in the same broad area. yesterday's signals will assist in better defining a reduced and much more manageable search area on the ocean floor. i believe we are searching in the right area, but we need to