Ackerman: Ackerman Security CEO Callahan retires

Ackerman Security Systems President and CEO Jim Callahan will retire Feb. 28. The Atlanta-based security company tapped Rich Perry, founder and CEO of Security Networks, as its new CEO. Callahan built Ackerman Security from a small, Atlanta-focused security company to a national player. Under his leadership, the company expanded into multiple cities and grew to more than 300 employees, becoming the 19th-largest security company in the United States. He joined Ackerman in 1997 as vice president...