The Port Authority of New York City's three major airports will install new tracking devices on emergency vehicles at LaGuardia, JFK and Newark airports, following a report by the National Transportation Safety Board (NTSB) highlighted a missing transponder aboard a fire truck as a contributing factor to the deadly LaGuardian Airport plane crash that killed two pilots and injured 39 others on board. The agency is expanding the use of transponders across the city in line with the Federal Aviation Administration's recommendation. The NTSB did not specify if the lack of a transpander could have prevented the collision. The cost of the $10,000 transponding devices involved in the crash is $11,000.