The investigators will employ a randomized clinical trial design among a cohort of active-duty firefighters who experience bothersome tinnitus. A planned enrollment of 40 firefighters with tinnitus in the clinical trial will have sufficient statistical power to detect a 17-point change in Tinnitus Handicap Inventory scores. In addition, a previously developed fcMRI protocol will be used to study brain activity in regions associated with voluntary, involuntary, and executive control of attention in 60 firefighters (40 firefighters enrolled in the clinical trial and 20 firefighters without tinnitus).