Acoustic Proficiency Training Systems is an acoustic analysis CBT device available at FLEASWTRACEN, FTC Norfolk, and all ATGs. It is used for initial and refresher training of acoustic analysts.

Advanced public transportation systems. Intelligent Vehilce Highway Systems, or IVHS, technology that is designed to improve transit services through advanced vehicle operations, communications, customer service and market development.

America's Public Television Stations. America's Public Television Stations (APTS) - a national membership organization that supports a strong financially sound public television system.

Advanced Public Transportation System