BOSTON - Coast Guard Southeastern New England command center received a call of child's voice making a mayday call July 14, 2012. False alerts and hoax calls are particularly frustrating cases for both the maritime emergency responders and taxpayers. These cases unnecessarily put first responders in danger and waste valuable operational hours and cost. The total search efforts associated with this call will be well over $20,000, $10,000 for one hour of helicopter search time and $3,000 each hour per small boat. U.S. Coast Guard audio.