Sanford Heisler Sharp is sharpening its Southeast operations, adding a veteran federal prosecutor in Nashville who the firm said will immediately focus on lawsuits nationwide against manufacturers of opioids and alleged “ghost guns.”

Brent Hannafan left his job on June 9 after 17 years in the U.S. Attorney’s office in the Middle District of Tennessee to represent both public and private plaintiffs nationally as co-chair of Sanford Heisler’s trial practice.