On January 31 2023, Region 10 entered a CAFO with Dana Josh Calloway, d.b.a. DJs Diesel (DJ's). Between January 1, 2020 and October 29, 2021 DJs sold at least 308 defeat devices and installed those devices on at least 154 heavy duty diesel motor vehicles. This settlement is part of EPAs National Compliance Initiative, Stopping Aftermarket Parts Defeat Devices for Vehicles and Engines. The CAFO requires DJs to pay a civil penalty of $1,650. The penalty amount was reduced based on the companys inability to pay a higher penalty and continue in business.