Wynonna Judd has been added to the line-up for this year’s Volunteer Jam. She’s one of the latest artists joining the 40th annual benefit show taking place in Nashville next month. The event, which is hosted by Charlie Daniels, has already announced performers Trace Adkins, Alabama, Montgomery Gentry and the Oak Ridge Boys. It will benefit Daniels’ charity the Journey Home Project, which helps U.S. veterans. Volunteer Jam is scheduled to take place on August 12th at the Bridgestone Arena.