Southwest Airlines, the $15.6 billion Dallas-based air carrier, named Tammy Romo CFO and senior vice president of finance. She succeeds Laura Wright, who is retiring after eight years as CFO and 25 years with the company. Romo, 50, is currently Southwest’s senior vice president of planning. She has also served as director of investor relations, treasurer and controller. Before joining Southwest in 1991, Romo worked as an audit manager at Coopers & Lybrand.