Butler Rubin Saltarelli & Boyd LLP added John O. Leahy as an associate. Leahy practices in complex commercial litigation. He was previously with Sidley Austin LLP.•Dinsmore & Shohl LLP added Daniel R. Flynn as a partner. Flynn, a member of the environmental practice group, focuses on environmental, health and safety issues. He was previously with Leech Tishman Fuscaldo & Lampl LLC.