$PSID ENG, which has a video on its website showcasing its capabilities, designs and builds mobile laboratories, wireless support vehicles (cell-on-wheels and cell-on-light-trucks), radio frequency (“RF”) test platforms, custom vehicles for utility companies, broadcast news vehicles, and other technical vehicles. It also offers service and maintenance, including mobile support and repairs on-call or under service contracts to help minimize vehicle downtime.

https://finance.yahoo.com/news/positiveid-e-n...00995.html