Region Letter: The National Highway Traffic Safety Administration (NHTSA) and TK Holdings, Inc. (Takata) have requested the support of BMW, Chrysler, Ford, Honda, Nissan, Mazda, and Toyota in investigating certain airbag inflator modules manufactured by Takata for use in various vehicles. This investigation includes front passenger airbag inflator modules installed in the covered vehicles. This investigation and regional recall is limited to Florida, Hawaii, Puerto Rico, and the U.S. Virgin Islands. The purpose of this field action is to support the shared immediate interest in protection of owners, drivers, and passengers and the collection of parts for inspection and analysis by NHTSA and Takata.